1. Attanasio, A., Cordeau, J.F., Ghiani, G., Laporte, G.: Parallel Tabu search heuristics for the dynamic multi-vehicle dial-a-ride problem. Parallel Comput. 30, 377–387 (2004)
2. Christofides, N., Mingozzi, A., Toth, P.: The vehicle routing problem. In: Combinatorial Optimization, vol. 11, pp. 315–338. John Wiley, Chichester (1979)
3. Cordeau, J.F., Laporte, G., Potvin, J.Y., Martin, W.P.: Transportation on Demand. In: Handbooks in Operations Research and Management Science (2004)
4. Lecture Notes in Computer Science;D. Hauptmeier,2000
5. Jaw, J.J., Odoni, A.R., Psaraftis, H.N., Wilson, N.H.M.: A heuristic algorithm for the multi-vehicle many-to-many advance request dial-a-ride problem with time windows. Pergamon Journals Ltd. 20B(3), 243–257 (1986)