@article{DIA_1981__6__A4_0,
     author = {Guitart, R. and Lair, C.},
     title = {Existence de diagrammes localement libres},
     journal = {Diagrammes},
     note = {talk:4},
     pages = {GL1--GL13},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {6},
     year = {1981},
     mrnumber = {684534},
     zbl = {0496.18005},
     language = {fr},
     url = {http://www.numdam.org/item/DIA_1981__6__A4_0/}
}