Prof. Dr. Raik Stolletz

Office hours:
on appointment

Room SO 230
Schloss Schneckenhof Ost (SO)
68131 Mannheim

Phone: 0621 - 181-1578
Fax: 0621 - 181-1579

Email: stolletz(at)


Raik Stolletz is Professor and  holds the Chair of Production Management at the University of Mannheim since December 2010. In his previous positions he served as an Associate Professor for Operations Management at the Department of Management Engineering, Technical University of Denmark, Denmark and as an Assistant Professor at the Leibniz University at Hannover, Germany. He obtained his PhD from the Technical University of Clausthal and studied Mathematics, Business Administration, and Computer Science at the Technical University of Berlin.

Professor Stolletz taught courses in advanced planning, production and operations management, and operations research in Bachelor, Master, and PhD programs.

His main research interest is in production and operations management. Current research projects focus on quantitative decision support in the design and management of manufacturing and service systems. This includes the optimization of operations scheduling, the performance analysis of dynamic and stochastic systems, the analysis and optimization of flow lines, and airport operations management. His research has been published in leading international academic journals, including Production and Operations Management, OR Spectrum, European Journal of Operational Research, and Annals of Operations Research.

Refereed publications


Becker, A., R. Stolletz, and T. Stäblein (2017): Strategic ramp-up planning in automotive production networks. International Journal of Production Research, 55 (1), 59-78.

Zamorano, E. and R. Stolletz (2017): Branch-and-price approaches for the Multiperiod Technician Routing and Scheduling Problem. European Journal of Operational Research, 257 (1), 55–68.


Wochner, S., M. Grunow, T. Stäblein, and R. Stolletz (2016): Planning for Ramp-ups and New Product Introductions in the Automotive Industry: Extending Sales and Operations Planning. International Journal of Production Economics, 182, 372-383.

Schwarz, J. A., G. Selinka, and R. Stolletz (2016): Performance analysis of time-dependent queueing systems: survey and classification. Omega 63, 170-189.

Göttlich, S., S. Kühn, J. A. Schwarz, and R. Stolletz (2016): Approximations of time-dependent unreliable flow lines with finite buffers. Mathematical Methods of Operations Research, 83 (3), 295-323.

Lieder, A. and R. Stolletz (2016): Scheduling Aircraft Take-Offs and Landings on Interdependent and Heterogeneous Runways. Transportation Research Part E: Logistics and Transportation Review 88, 167-188.

Selinka, G., A. Franz, and R. Stolletz (2016): Time-dependent performance approximation of truck handling operations at an air cargo terminal. Computers & Operations Research 65, 164-173.


Lieder, A., D. Moeke, G. M. Koole, and R. Stolletz (2015): Task scheduling in long-term care facilities: A client-centered approach. Operations Research for Health Care 6, 11-17.

Guhlich, H., M. Fleischmann, and R. Stolletz (2015): Revenue management approach to due date quoting and scheduling in an assemble-to-order production system. OR Spectrum 37 (4), 951-982.

Weiss, S. and R. Stolletz (2015): Buffer allocation in stochastic flow lines via sample-based optimization with initial bounds. OR Spectrum 37 (4), 869-902.

Lieder, A., D. Briskorn, and R. Stolletz (2015): A Dynamic Programming Approach for the Aircraft Landing Problem with Aircraft Classes. European Journal of Operational Research 243 (1), 61-69.


Stolletz, R. and E. Zamorano (2014): A rolling planning horizon heuristic for scheduling agents with different qualifications. Transportation Research Part E: Logistics and Transportation Review 68, 39-52.

Briskorn, D. and R. Stolletz (2014): Aircraft landing problems with aircraft classes.  Journal of Scheduling 17 (1), 31-45.

Brunner, J. O. and R. Stolletz (2014): Stabilized branch and price with dynamic parameter updating for discontinuous tour scheduling. Computers & Operations Research 44, 137-145.


Stolletz, R. and S. Lagershausen (2013): Time-dependent performance evaluation for loss-waiting queues with arbitrary distributions. International Journal of Production Research 51 (5), 1366-1378.

Stolletz, R. and M. Manitz (2013): The Impact of a Waiting-Time Threshold in Overflow Systems with Impatient Customers. Omega 41 (2), 280-286.


Roubos, A., G. Koole, and R. Stolletz (2012): Service-Level Variability of Inbound Call Centers. Manufacturing & Service Operations Management 14 (3), 402-413.

Stolletz, R. and J. O. Brunner (2012): Fair optimization of fortnightly physician schedules with flexible shifts. European Journal of Operational Research 219 (3), 622-629.


Stolletz, R. (2011): Analysis of Passenger Queues at Airport Terminals. Research in Transportation Business & Management 1 (1), 144-149.

Helber, S., K. Schimmelpfeng, R. Stolletz, and S. Lagershausen (2011): Using linear programming to analyze and optimize stochastic flow lines. Annals of Operations Research 182 (1), 193-211.

Helber, S., K. Schimmelpfeng, and R. Stolletz (2011): Setting inventory levels of CONWIP lines via linear programming. Business Research 4 (1), 98-115.


Barth, W., M. Manitz, and R. Stolletz (2010): Analysis of Two-Level Support Systems with Time-Dependent Overflow - A Banking Application. Production and Operations Management 19, (6) 757-768.

Stolletz, R. (2010): Operational workforce planning for check-in counters at airports. Transportation Research Part E: Logistics and Transportation Review 46 (3), 414-425.


Helber, S., K. Schimmelpfeng and R. Stolletz (2009): First results on setting inventory levels of CONWIP flow lines via linear programming. In: Tolio, T. (editor): Seventh International Conference on Stochastic Models of Manufacturing and Service Operations, Italy, June 7-12, 2009, 208-216.

Stolletz, R. (2009): A binary programming formulation for the tour scheduling problem with flexible contracts. INFORMS International Conference on Service Science Proceedings, Hong Kong, August, 2009.


Stolletz, R. and L. Stolletz (2008): Linearisierungsverfahren für Standortplanungsprobleme mit nichtlinearen Transportkosten. (Linearization Methods for Facility Location Problems with non-linear Transportation Costs.) Zeitschrift für Planung & Unternehmenssteuerung 19 (3), 261-280 (in German).

Stolletz, R. (2008): Approximation of the non-stationary M(t)/M(t)/c(t)-queue using stationary queueing models: The stationary backlog-carryover approach. European Journal of Operational Research 190 (2), 478-493.

Stolletz, R. (2008): Non-stationary delay analysis of runway systems. OR Spectrum 30 (1), 191-213.


Helber, S., R. Stolletz, and S. Bothe (2005): Erfolgszielorientierte Agentenallokation in In-bound Call-Centern. (Pro fit-maximizing Agent Staffing in Inbound Call Centers.) Zeitschrift für betriebswirtschaftliche Forschung 57 (1), 3-32 (in German).


Stolletz, R. and S. Helber (2004): Performance analysis of an inbound call center with skills-based routing. A priority queueing system with two classes of impatient customers and heterogeneous agents. OR Spectrum 26 (3), 331-352.

Helber, S. and R. Stolletz (2004): Grundlagen und Probleme der Personalbedarfsermittlung in Inbound-Call Centern. (Principles and Problems of Sta ff Requirement Planning in Inbound Call Centers.) Zeitschrift für Betriebswirtschaft, Ergänzungsheft 1/2004, 67-88 (in German).


Stolletz, R. (2003): Performance Analysis of M-designed Inbound Call Centers. In: Ahr, D., R. Fahrion, M. Oswald, and G. Reinelt (editors): Operations Research Proceedings 2003, 9-16.

Books and other publications

Schwarz, J. A. and R. Stolletz (2013): Warteschlangentheorie in der Betriebswirtschaftslehre. (Queueing theory and business administration.) WiSt - Wirtschaftswissenschaftliches Studium 42 (5), 262-265 (in German).

Stolletz, R., H. Pingel, und C. Heerig (2009): Szenariobasierte Ersatzteilbestandsplanung bei unsicherem Verschleiß. (Scenario-based spare part planning with uncertain times to failures.) Zeitschrift für wirtschaftlichen Fabrikbetrieb 104 (3), 170-173 (in German).

Stolletz, R. (2008): Paragraph "Warteschlangentheorie." (Queueing theory.) In: Corsten, H. and R. Gössinger (editors): Lexikon der Betriebswirtschaftslehre, 5th edition, 892-894, Oldenbourg, Munich (in German).

Helber, S. and R. Stolletz (2004): Call Center Management in der Praxis. Strukturen und Prozesse betriebswirtschaftlich optimieren. (Applied Call Center Management. Managerial Optimization of System Con gurations and Processes.) Springer, Berlin et al. (in German).

Stolletz, R. (2003): Performance Analysis and Optimization of Inbound Call Centers, Lecture Notes in Economics and Mathematical Systems, Vol. 528, Springer, Berlin et al.

Working papers

Weiss, S., A. Matta, and R. Stolletz (2016): Optimization of buffer allocations in flow lines with limited supply.

Zamorano, E., A. Becker, and R. Stolletz (2016): Task assignment with start time-dependent processing times for personnel at check-in counters.

Guhlich, H., M. Fleischmann, L. Mönch, and R. Stolletz (2015): Revenue management in a multi-stage make-to-order production system.

Roth, M., R. Stolletz, and L. Merkert (2015): Production scheduling in steel plants with time-dependent electricity costs.