C. Archetti and M.G. Speranza. Vehicle routing problems with split deliveries. International Transactions in Operational Research, 39, 3-22, 2012.
C. Archetti, M.G. Speranza. The split delivery vehicle routing problem: a survey. The Vehicle Routing Problem: Latest Advances and New Challenges, Golden B., Raghavan R., and Wasil E.(eds.), Springer, 103-122, 2008.