@article{GAU_1975-1976__3_1_A5_0,
     author = {Bertrand, Daniel},
     title = {Sous-groupes \`a un param\`etre de vari\'et\'es de groupe},
     journal = {Groupe d'\'etude d'analyse ultram\'etrique},
     note = {talk:8},
     pages = {1--1},
     year = {1975-1976},
     publisher = {Secr\'etariat math\'ematique},
     volume = {3},
     number = {1},
     zbl = {0351.22006},
     language = {fr},
     url = {https://www.numdam.org/item/GAU_1975-1976__3_1_A5_0/}
}