@article{PDML_1979__16_3-4_21_0,
     author = {Frasnay, Claude},
     title = {Sur quelques classes universelles de relations $m$-aires},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {21--32},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {16},
     number = {3-4},
     year = {1979},
     mrnumber = {602650},
     zbl = {0451.04002},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1979__16_3-4_21_0/}
}