@article{BURO_1973__20__3_0,
     author = {Kreweras, G.},
     title = {Sur les hi\'erarchies de segments},
     journal = {Cahiers du Bureau universitaire de recherche op\'erationnelle S\'erie Recherche},
     pages = {3--61},
     publisher = {Institut Henri Poincar\'e - Institut de Statistique de l'Universit\'e de Paris},
     volume = {20},
     year = {1973},
     language = {fr},
     url = {http://www.numdam.org/item/BURO_1973__20__3_0/}
}