@article{SD_1973-1974__27_2_A5_0,
     author = {Nicolas, Anne-Marie},
     title = {Extensions factorielles},
     journal = {S\'eminaire Albert Ch\^atelet et Paul Dubreil},
     note = {talk:15},
     pages = {1--8},
     year = {1973-1974},
     publisher = {Secr\'etariat math\'ematique},
     volume = {27},
     number = {2},
     mrnumber = {392984},
     zbl = {0363.13009},
     language = {fr},
     url = {https://www.numdam.org/item/SD_1973-1974__27_2_A5_0/}
}