Heuristics for hybrid flow shops with controllable processing times and assignable due dates. - Jatinder N. D. Gupta; Karin Krüger; Volker Lauff; Frank Werner 001; Yuri N. Sotskov (Comput. Oper. Res., 2002)

On the complexity and some properties of multi-stage scheduling problems with earliness and tardiness penalties. - Volker Lauff; Frank Werner 001 (Comput. Oper. Res., 2004)

Two-Machine Flow Shop Scheduling with Nonregular Criteria. - Jatinder N. D. Gupta; Volker Lauff; Frank Werner 001 (J. Math. Model. Algorithms, 2004)

Scheduling with common due date, earliness and tardiness penalties for multimachine problems: A survey. - Volker Lauff; Frank Werner 001 (Math. Comput. Model., 2004)