Publications of the Institute of Production Management


  • Helber, S. (2014): Operations Management Tutorial.Stefan Helber, Hildesheim
    ISBN: 978-3-945951-20-0
  • Kellenbrink, C. (2014): Ressourcenbeschränkte Projektplanung für flexible ProjekteSpringer Gabler, Wiesbaden.
    DOI: 10.1007/978-3-658-02871-8
  • Helber, S., Stolletz, R. (2004): Call Center Management in der Praxis: Strukturen und Prozesse betriebswirtschaftlich optimierenSpringer-Verlag, Berlin, Heidelberg.
    DOI: 10.1007/978-3-642-17150-5
  • Küpper, H.-U., Helber, S. (2004): Ablauforganisation in Produktion und LogistikSchäffer Poeschel, Stuttgart.
    ISBN: 978-3791023427
  • Helber, S. (1999): Performance Analysis of Flow Lines with Non-Linear Flow of MaterialSpringer-Verlag, Berlin, Heidelberg.
    DOI: 10.1007/978-3-642-95863-2
  • Helber, S. (1994): Kapazitätsorientierte Losgrößenplanung in PPS-SystemenStuttgart (Metzler& Poeschel Verlag für Wissenschaft und Forschung).

Referenced Articles

  • Seifi, C., Schulze, M. and Zimmermann, J. (2021): A new mathematical formulation for a potash-mine shift scheduling problem with a simultaneous assignment of machines and workersEuropean Journal of Operational Research, 292(1), pp.27-42
  • Seifi, C., Schulze, M. and Zimmermann, J. (2021): Solution procedures for block selection and sequencing in flat-bedded potash underground minesOR Spectrum, 43(2), pp.409-440
  • Hoffmann, L., Kellenbrink, C., Helber, S. (2020): Simultaneous structuring and scheduling of multiple projects with flexible project structuresJournal of Business Economics
    DOI: 10.1007/s11573-020-00993-z
  • Helber, S., Inderfurth, K., Sahling, F., Schimmelpfeng, K. (2018): Flexible versus robust lot-scheduling subject to random production yield and deterministic dynamic demandIISE Transactions, 50(3), pp. 217-229.
    DOI: 10.1080/24725854.2017.1357089
  • Helber, S.; Broihan, J.; Jang, Y.J.; Hecker, P.; Feuerle, T. (2018): Location Planning for Dynamic Wireless Charging Systems for Electric Airport Passenger BusesEnergies, 11(2), pp. 258.
    DOI: 10.3390/en11020258
  • Liberopoulos, G., Heavey, C., Helber, S., Karaesmen, F., Matta, A. (2018): Contributions to stochastic models of manufacturing and service operationsIISE Transactions, 50(3), pp. 141-142.
    DOI: 10.1080/24725854.2018.1404810
  • Schnabel, A., Kellenbrink, C., Helber, S. (2018): Profit-oriented scheduling of resource-constrained projects with flexible capacity constraintsBusiness Research, 11(2), pp. 329-356.
    DOI: 10.1007/s40685-018-0063-5
  • Yildiz, B.; Förster, P.; Feuerle, T.; Hecker, P.; Bugow, S.; Helber, S. (2018): A Generic Approach to Analyze the Impact of a Future Aircraft Design on the Boarding ProcessEnergies, 11(2), 303.
    DOI: 10.3390/en11020303
  • Kellenbrink, C., Helber, S. (2016): Quality- and profit-oriented scheduling of resource-constrained projects with flexible project structure via a genetic algorithmEuropean Journal of Industrial Engineering, 10(5), pp. 574-595.
    DOI: 10.1504/EJIE.2016.078807
  • Kellenbrink, C., Helber, S. (2016): Controlling in SonderforschungsbereichenForschung, Politik, Strategie, Management, 9 (2), S. 45-53
  • Sahling, F., Kayser, A. (2016): Strategic supply network planning with vendor selection under consideration of risk and demand uncertaintyOmega - The International Journal of Management Science, 59, pp. 201-214.
    DOI: 10.1016/
  • Schulze, M., Rieck, J., Seifi, C. and Zimmermann, J. (2016): Machine scheduling in underground mining: an application in the potash industryOR spectrum, 38(2), pp.365-403
  • Helber, S., Böhme, D., Oucherif, F., Lagershausen, S., Kasper, S. (2015): A hierarchical facility layout planning approach for large and complex hospitalsFlexible Services and Manufacturing Journal, 28(1-2), pp. 5-29.
    DOI: 10.1007/s10696-015-9214-6
  • Kayser, A., Sahling, F. (2015): Relocatable modular capacities in risk aware strategic supply network planning under demand uncertainty (Working paper).
  • Kellenbrink, C., Helber, S. (2015): Scheduling resource-constrained projects with a flexible project structureEuropean Journal of Operational Research, 246(2), pp. 379-391.
    DOI: 10.1016/j.ejor.2015.05.003
  • Wolter, A., Helber, S. (2015): Simultaneous production and maintenance planning for a single capacitated resource facing both a dynamic demand and intensive wear and tearCentral European Journal of Operations Research, 24(3), pp. 489-513.
    DOI: 10.1007/s10100-015-0403-x
  • Helber, S., Sahling, F., Schimmelpfeng, K. (2013): Dynamic capacitated lot sizing with random demand and dynamic safety stocksOR Spectrum, 35(1), pp. 75-105.
    DOI: 10.1007/s00291-012-0283-6
  • Schimmelpfeng, K., Helber, S., Kasper, S. (2012): Decision support for rehabilitation hospital schedulingOR Spectrum, 34(1), pp. 461-489.
    DOI: 10.1007/s00291-011-0273-0
  • Helber, S., Schimmelpfeng, K., Stolletz, R. (2011): Setting Inventory Levels of CONWIP Flow Lines via Linear ProgrammingBuR - Business Research, 4(1), pp. 98-115.
    DOI: 10.1007/BF03342728
  • Helber, S., Schimmelpfeng, K., Stolletz, R., Lagershausen, S. (2010): Using linear programming to analyze and optimize stochastic flow linesAnnals of Operations Research, 182(1), S. 193-211.
    DOI: 10.1007/s10479-010-0692-3
  • Buschkühl, L., Sahling, F., Helber, S., Tempelmeier, H. (2010): Dynamic Capacitated Lotsizing Problems - A Classification and Review of Solution ApproachesOR Spectrum, 32(2), pp. 231-261.
    DOI: 10.1007/s00291-008-0150-7
  • Helber, S., Henken, K. (2010): Profit-oriented shift scheduling of inbound contact centers with skills-based routing, impatient customers, and retrialsOR Spectrum, 32(1), pp. 109-134.
    DOI: 10.1007/s00291-008-0141-8
  • Helber, S., Schimmelpfeng, K., Stolletz, R., Lagershausen, S. (2010): Using linear programming to analyze and optimize stochastic flow linesAnnals of Operations Research, 182(1), S. 193-211.
    DOI: 10.1007/s10479-010-0692-3
  • Sahling, F., Buschkühl, L., Tempelmeier, H., Helber, S. (2009): Solving a Multi-Level Capacitated Lot Sizing Problem with Multi-Period Setup Carry-Over via a Fix-and-Optimize HeuristicComputers & Operations Research, 36(9), pp. 2546-2553.
    DOI: 10.1016/j.cor.2008.10.009
  • Schimmelpfeng, K., Helber, S. (2007): Application of a real-world university-course timetabling model solved by integer programmingOR Spectrum, 29(4), pp. 783-803.
    DOI: 10.1007/s00291-006-0074-z
  • Helber, S. (2005): Analysis of Flow Lines with Cox-2-distributed Processing Times and Limited Buffer CapacityOR Spectrum, 27(2-3), pp. 221-242.
    DOI: 10.1007/s00291-005-0198-6
  • Helber, S., Stolletz, R., Bothe, S. (2005): Erfolgszielorientierte Agentenallokation in Inbound Call CenternZeitschrift für betriebswirtschaftliche Forschung, 57(1), pp. 3-32.
    DOI: 10.1007/BF03372759
  • Helber, S., Jusic, H. (2004): A new decomposition approach for non-cyclic continuous material flow lines with a merging flow of materialAnnals of Operations Research, 125(1-4), pp. 117-139.
    DOI: 10.1023/B:ANOR.0000011188.11019.33
  • Helber, S., Stolletz, R. (2004): Grundlagen und Probleme der Personalbedarfsermittlung in Call CenternZeitschrift für Betriebswirtschaft, Ergänzungsheft, 74(1), pp. 67-88.
    ISBN: 3-409-12643-0
  • Kuhn, H., Helber, S. (2004): Produktionssegmentierung unter Beachtung stochastisch-dynamischer EinflußgrößenWirtschaftswissenschaftliches Studium, 33(8), pp. 463-469.
    DOI: 10.15358/0340-1650-2004-8-463
  • Stolletz, R., Helber, S. (2004): Performance Analysis of an Inbound Call Center with Skills-Based RoutingOR Spectrum, 26(3), pp. 331-352.
    DOI: 10.1007/s00291-004-0161-y
  • Helber, S., Kuhn, H. (2003): Planung von ProduktionsinselnWirtschaftswissenschaftliches Studium, 32(2), pp. 76-82.
    DOI: 10.15358/0340-1650-2003-2-76
  • Helber, S. (2001): Cash-Flow Oriented Buffer Allocation in Stochastic Flow LinesInternational Journal of Production Research, 39(14), pp. 3061-3083.
    DOI: 10.1080/00207540110056144
  • Helber, S. (2000): Kapitalwertorientierte Pufferallokation in stochastischen FließproduktionssystemenZeitschrift für betriebswirtschaftliche Forschung, 52(3), pp. 211-233.
    DOI: 10.1007/BF03372616
  • Helber, S. (2000): Approximate Analysis of Unreliable Transfer Lines with Splits in the Flow of MaterialAnnals of Operations Research, 93(1-4), pp. 217-243.
    DOI: 10.1023/A:1018923907048
  • Helber, S. (1998): Decomposition of Unreliable Assembly/Disassembly Networks with Limited Buffer Capacity and Random Processing TimesEuropean Journal of Operational Research, 109(1), pp. 24-42.
    DOI: 10.1016/S0377-2217(97)00166-5
  • Helber, S. (1995): Lot Sizing in Capacitated Production Planning and Control SystemsOR Spectrum, 17(1), pp. 5-18.
    DOI: 10.1007/BF01719725
  • Tempelmeier, H., Helber, S. (1994): A Heuristic for Dynamic Multi-Item Multi-Level Capacitated Lotsizing for General Product StructuresEuropean Journal of Operational Research, 75(2), pp. 296-311.
    DOI: 10.1016/0377-2217(94)90076-0

Referenced Books

  • Helber, S. (2006): Analysis of flow lines with Cox-2-distributed processing times and limited buffer capacityin: Liberopoulos G., Papadopoulos C.T., Tan B., Smith J.M., Gershwin S.B. (eds) Stochastic Modeling of Manufacturing Systems, pp. 55-76.
    DOI: 10.1007/3-540-29057-5_3
  • Helber, S., Mehrtens, N. (2003): Exact Analysis of a Continuous Material Merge System with Limited Buffer Capacity and three Stationsin: Analysis and Modeling of Manufacturing Systems, Gershwin, S. B., Dallery, Y., Papadopoulos, C. T., MacGregor Smith, J. (eds.), (Kluwer), pp. 85-121.
    DOI: 10.1007/978-1-4615-1019-2_4
  • Helber, S. (1998): Cash-Flow Oriented Lot Sizing in MRP II Systems, München 1997in: Beyond Manufacturing Resource Planning (MRP II), Drexl, A., Kimms, A. (eds.), Heidelberg (Springer), pp. 147-183.
    DOI: 10.1007/978-3-662-03742-3_7

International Conference Paper, peer-reviewed

  • Seifi, C., Schulze, M., Zimmermann, J. (2019): A two-stage solution approach for a shift scheduling problem with a simultaneous assignment of machines and workersMining goes digital: proceedings of the 39th international symposium application of computers and operations research in the mineral industry (APCOM), June 2019, Wroclaw, Poland. CRC Press, pp.377–385
  • Hoffmann, L.-S., Kellenbrink, C. (2018): Scheduling Multiple Flexible Projects with Different Variants of Genetic AlgorithmsProceedings of the 16th International Conference on Project Management and Scheduling, Rome (Italy), pp. 128-131.
    ISBN: 9788894982022
  • Schnabel, A., Kellenbrink, C. (2018): Scheduling resource-constrained projects with makespan-dependent revenues and costly overcapacityProceedings of the 16th International Conference on Project Management and Scheduling, Rome (Italy), pp. 205-208.
    ISBN: 9788894982022
  • Hoffmann, L.-S., Kuprat, T., Kellenbrink, C., Schmidt, M., Nyhuis, P. (2017): Priority rule-based planning approaches for regeneration processesProcedia CIRP, 59, pp. 89-94.
    DOI: 10.1016/j.procir.2016.09.028
  • Kellenbrink, C. (2014): First results on resource-constrained project scheduling with model-endogenous decision on the project structureS. Helber et al. (eds.), Operations Research Proceedings 2012, Springer Verlag, Cham, pp. 429-434.
    DOI: 10.1007/978-3-319-00795-3_64
  • Kellenbrink, C. (2014): First Results on Quality-Oriented Scheduling of Flexible ProjectsT. Fliedner, R. Kolisch und A. Naber (eds.), Proceedings of the 14th International Conference on Project Management and Scheduling, pp. 129-132.
    ISBN: 978-3-00-045630-5
  • Kellenbrink, C., Herde, F., Eickemeyer, S. C., Kuprat, T., Nyhuis, P. (2014): Planning the Regeneration Processes of Complex Capital GoodsPlanning the Regeneration Processes of Complex Capital Goods, Procedia CIRP, 24, pp. 140-145.
    DOI: 10.1016/j.procir.2014.08.001

Further Publications

  • Helber, S. (2007): Stichwort Dienstleistungsproduktionin: Köhler, R., Küpper, U., Pfingsten, A. (eds.) Handwörterbuch der Betriebswirtschaft, Schäffer-Poeschel, Stuttgart, col. 302-311.
  • Helber, S. (2002): Stichwort Konfigurationsplanung bei Fließproduktionin: Arnold, D., Isermann, H., Kuhn, A. und H. Tempelmeier (eds.), Handbuch Logistik, Springer, Berlin et al., par. A 3-21 until A 3-30.
  • Helber, S. (2002): Stichwort Investitionstheoretische Kostenrechnungin: Küpper, H.-U. und Wagenhofer, A. (eds.), Handwörterbuch Unternehmensrechung und Controlling, Schäffer-Poeschel, Stuttgart, col. 876-886.
  • Helber, S. (1997): Approximate Analysis of Unreliable Transfer Lines with Rework or Scrapping of PartsWorking Paper OR 320-97, Operations Research Center, Massachusetts Institute of Technology, Cambridge (Ma).
    DOI: 10.1023/A:1018923907048
  • Helber, S. (1996): Stichwort Produktionstiefenbestimmungin: Kern, W., Schroeder, H.-H. und J. Weber (eds.), Handwörterbuch der Produktionswirtschaft, 2nd ed., Schäffer-Poeschel, Stuttgart, col. 1603-1617.
  • Helber, S. (1995): Stichworte Amortisationsrechnung, Annuität, Arbeitsplan, CIM-Konzept, Dynamische Planungsrechnung, Interne Zinsfußmethode, Kapitalwertmethode, Kontrollkarte, Kontrolle, Träger und Objekte der, Nichtlineare Planungsrechnung, Simulation, Simultanmodelle, Stücklistein: Küpper, H.-U. und J. Weber (eds.), Grundbegriffe des Controlling, Schäffer-Poeschel, Stuttgart.
  • Helber, S. (1993): Stichworte Elektronischer Leitstand, Lean Production, MRP-Systeme, OPT-Systemin: Dichtl, E. und O. Issing (eds.), Vahlens Großes Wirtschaftslexikon, 2nd ed., Vahlen, München.