@article{M2AN_1971__5_1_105_0, author = {Boulaye, Guy}, title = {Notions d'extension dans les treillis}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique}, pages = {105--116}, publisher = {Dunod}, volume = {5}, number = {R1}, year = {1971}, zbl = {0237.06004}, mrnumber = {294186}, language = {fr}, url = {archive.numdam.org/item/M2AN_1971__5_1_105_0/} }
Boulaye, Guy. Notions d'extension dans les treillis. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 5 (1971) no. R1, pp. 105-116. http://archive.numdam.org/item/M2AN_1971__5_1_105_0/