@article{RO_1976__10_1_55_0,
     author = {Christofides, Nicos},
     title = {The vehicle routing problem},
     journal = {Revue fran\c{c}aise d'automatique, informatique, recherche op\'erationnelle. Recherche op\'erationnelle},
     pages = {55--70},
     publisher = {EDP-Sciences},
     volume = {10},
     number = {V1},
     year = {1976},
     mrnumber = {408788},
     zbl = {0336.90021},
     language = {en},
     url = {http://www.numdam.org/item/RO_1976__10_1_55_0/}
}