@article{RO_1991__25_1_87_0,
     author = {Mesa, Juan A.},
     title = {Multiperiod medians on networks},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {87--95},
     publisher = {EDP-Sciences},
     volume = {25},
     number = {1},
     year = {1991},
     mrnumber = {1110777},
     zbl = {0734.90050},
     language = {en},
     url = {http://archive.numdam.org/item/RO_1991__25_1_87_0/}
}