1. Clients map - google’s maps api.
https://drive.google.com/open?id=1_MxV75hs_qlFENsXIhh0HJDYZkcu7pJ-&usp=sharing
2. Google’s or-tools.
https://developers.google.com/optimization/
3. Aguirre-Gonzalez, E., Villegas, J.: A two-phase heuristic for the collection of waste animal tissue in a colombian rendering company. Commun. Comput. Inf. Sci. 742, 511–521 (2017)
4. Arenas, I.G.P., Sánchez, A.G., Armando, C., Solano, L., Medina, L.B.R.: Cvrptw model applied to the collection of food donations
5. Baldacci, R., Christofides, N., Mingozzi, A.: An exact algorithm for the vehicle routing problem based on the set partitioning formulation with additional cuts. Math. Program. 115(2), 351–385 (2008)