20.
Pop P.C., Fuksz L., Marc A.H.: A variable neighborhood search approach for solving the generalized vehicle routing problem. In: Polycarpou M., de Carvalho A.C.P.L.F., Pan J.S., Woźniak M., Quintian H., Corchado E., eds.: Hybrid Artificial Intelligence Systems. Vol 8480. Lecture notes in computer science. Cham: Springer International Publishing. 2014, 13-24. DOI:10.1007/978-3-319-07617-1_2.