Sa'adah, S., Ross, P. & Paechter, B. (2003). Solving vehicle routing problems using different multiple ant colony systems
Sa'adah, S., Ross, P. & Paechter, B. (2004). Improving vehicle routing using a customer waiting time colony. In Gottlieb, J. & Raidl, G. (Eds.). Evolutionary Computation in Combinatorial Optimization, 188-198. doi:10.1007/978-3-540-24652-7_19. ISBN 978-3-540-21367-3
In the vehicle routing problem with time windows (VRPTW), there are two main objectives. The primary objective is to reduce the number of vehicles, the secondary one is to min...