@article{SD_1968-1969__22_1_A1_0,
     author = {Boulaye, Guy},
     title = {Extensions dans les treillis},
     journal = {S\'eminaire Albert Ch\^atelet et Paul Dubreil},
     note = {talk:2},
     pages = {1--10},
     year = {1968-1969},
     publisher = {Secr\'etariat math\'ematique},
     volume = {22},
     number = {1},
     zbl = {0237.06003},
     language = {fr},
     url = {https://www.numdam.org/item/SD_1968-1969__22_1_A1_0/}
}