1. Cormen, T.H., Leiserson, C.E., Rivest, R.L., Stein, C.: Data structures for Disjoint Sets. In: Introduction to Algorithms, ch. 21, 2nd edn., MIT Press, Cambridge (2001)
2. Drexl, A., Kimms, A.: Lot sizing and scheduling - survey and extensions. European Journal of Operational Research, 221–235 (1997)
3. Lecture Notes in Computer Science;F. Focacci,1999
4. Focacci, F., Lodi, A., Milano, M., Vigo, D.: Solving tsp through the integration of or and cp techniques. Electronic Notes in Discrete Mathematics 1, 13–25 (1999)
5. Jans, R., Degraeve, Z.: Modeling industrial lot sizing problems: A review. International Journal of Production Research (2006)