1. Baker, B.M., Sheasby, J.E., 1997. Extensions to the generalised assignment heuristic for vehicle routing. Working Paper, School of MIS, Coventry University, UK
2. OR-library: Distributing test problems by electronic mail;Beasley;Journal of the Operational Research Society,1990
3. Beasley, J.E., 1993. Lagrangean relaxation. In: Reeves, C.R. (Ed.), Modern Heuristic Techniques for Combinatorial Problems. Blackwell Scientific Publications, Oxford, pp. 243–303
4. Christofides, N., Mingozzi, A., Toth, P., 1979. The vehicle routing problem. In: Christofides, N., Mingozzi, A., Toth, P., Sandi, C. (Eds.), Combinatorial Optimization. Wiley, New York, pp. 315–338
5. A generalized assignment heuristic for vehicle routing;Fisher;Networks,1981