Publications

Helber, S. (2014): Operations Management Tutorial.,  Stefan Helber, Hildesheim
ISBN: 978-3-945951-20-0

Helber, S., Stolletz, R. (2004): Call Center Management in der Praxis: Strukturen und Prozesse betriebswirtschaftlich optimieren,  Springer-Verlag, Berlin, Heidelberg.
DOI: 10.1007/978-3-642-17150-5

Küpper, H.-U., Helber, S. (2004): Ablauforganisation in Produktion und Logistik,  Schäffer Poeschel, Stuttgart.
ISBN: 978-3791023427

Helber, S. (1999): Performance Analysis of Flow Lines with Non-Linear Flow of Material,  Springer-Verlag, Berlin, Heidelberg.
DOI: 10.1007/978-3-642-95863-2

Helber, S. (1994): Kapazitätsorientierte Losgrößenplanung in PPS-Systemen,  Stuttgart (Metzler& Poeschel Verlag für Wissenschaft und Forschung).

Broihan, J., Nozinski, I., Pöch, N., & Helber, S. (2022): Designing Dynamic Inductive Charging Infrastructures for Airport Aprons with Multiple Vehicle Types,  Energies, 15(11), S. 4085.
DOI: 10.3390/en15114085

Kellenbrink, C., Nübel, N., Schnabel, A., Gilge, P., Seume, J., Denkena, B. & Helber, S. (2022): A regeneration process chain with an integrated decision support system for individual regeneration processes based on a virtual twin,  International Journal of Production Research, 60(13), S. 4137-4158.
DOI: 10.1080/00207543.2022.2051089

Pöch, N., Nozinski, I., Broihan, J., & Helber, S. (2022): Numerical Study on Planning Inductive Charging Infrastructures for Electric Service Vehicles on Airport Aprons,  Energies, 15(18), S. 6510.
DOI: 10.3390/en15186510

Hoffmann, L., Kellenbrink, C., Helber, S. (2020): Simultaneous structuring and scheduling of multiple projects with flexible project structures,  Journal of Business Economics, 90, S. 679–711
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 demand,  IISE 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 Buses,  Energies, 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 operations,  IISE 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 constraints,  Business 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 Process,  Energies, 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 algorithm,  European Journal of Industrial Engineering, 10(5), pp. 574-595.
DOI: 10.1504/EJIE.2016.078807

Kellenbrink, C., Helber, S. (2016): Controlling in Sonderforschungsbereichen,  Forschung, Politik, Strategie, Management, 9 (2), S. 45-53

Helber, S., Böhme, D., Oucherif, F., Lagershausen, S., Kasper, S. (2015): A hierarchical facility layout planning approach for large and complex hospitals,  Flexible Services and Manufacturing Journal, 28(1-2), pp. 5-29.
DOI: 10.1007/s10696-015-9214-6

Kellenbrink, C., Helber, S. (2015): Scheduling resource-constrained projects with a flexible project structure,  European 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 tear,  Central 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 stocks,  OR 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 scheduling,  OR 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 Programming,  BuR - Business Research, 4(1), pp. 98-115.
DOI: 10.1007/BF03342728

Helber, S., Schimmelpfeng, K., Stolletz, R., Lagershausen, S. (2011): Using linear programming to analyze and optimize stochastic flow lines,  Annals of Operations Research, 182(1), pp. 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 Approaches,  OR 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 retrials,  OR 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 lines,  Annals 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 Heuristic,  Computers & 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 programming,  OR 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 Capacity,  OR 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 Centern,  Zeitschrift 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 material,  Annals 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 Centern,  Zeitschrift für Betriebswirtschaft, Ergänzungsheft, 74(1), pp. 67-88.
ISBN: 3-409-12643-0

Kuhn, H., Helber, S. (2004): Produktionssegmentierung unter Beachtung stochastisch-dynamischer Einflußgrößen,  Wirtschaftswissenschaftliches 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 Routing,  OR Spectrum, 26(3), pp. 331-352.
DOI: 10.1007/s00291-004-0161-y

Helber, S., Kuhn, H. (2003): Planung von Produktionsinseln,  Wirtschaftswissenschaftliches 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 Lines,  International Journal of Production Research, 39(14), pp. 3061-3083.
DOI: 10.1080/00207540110056144

Helber, S. (2000): Kapitalwertorientierte Pufferallokation in stochastischen Fließproduktionssystemen,  Zeitschrift 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 Material,  Annals 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 Times,  European 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 Systems,  OR 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 Structures,  European Journal of Operational Research, 75(2), pp. 296-311.
DOI: 10.1016/0377-2217(94)90076-0

Helber, S. (2006): Analysis of flow lines with Cox-2-distributed processing times and limited buffer capacity,  in: 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 Stations,  in: 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 1997,  in: 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

Helber, S. (2007): Stichwort Dienstleistungsproduktion,  in: Köhler, R., Küpper, U., Pfingsten, A. (eds.) Handwörterbuch der Betriebswirtschaft, Schäffer-Poeschel, Stuttgart, col. 302-311.

Helber, S. (2002): Stichwort Konfigurationsplanung bei Fließproduktion,  in: 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 Kostenrechnung,  in: 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 Parts,  Working Paper OR 320-97, Operations Research Center, Massachusetts Institute of Technology, Cambridge (Ma).
DOI: 10.1023/A:1018923907048

Helber, S. (1996): Stichwort Produktionstiefenbestimmung,  in: 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, Stückliste,  in: Küpper, H.-U. und J. Weber (eds.), Grundbegriffe des Controlling, Schäffer-Poeschel, Stuttgart.

Helber, S. (1993): Stichworte Elektronischer Leitstand, Lean Production, MRP-Systeme, OPT-System,  in: Dichtl, E. und O. Issing (eds.), Vahlens Großes Wirtschaftslexikon, 2nd ed., Vahlen, München.