Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1977__18_3_a11, author = {Vl\v{c}ek, Ivan}, title = {On congruences of the lattices ${\rm Sub (L)}$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {541--546}, publisher = {mathdoc}, volume = {18}, number = {3}, year = {1977}, mrnumber = {0491384}, zbl = {0367.06004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1977__18_3_a11/} }
Vlček, Ivan. On congruences of the lattices ${\rm Sub (L)}$. Commentationes Mathematicae Universitatis Carolinae, Tome 18 (1977) no. 3, pp. 541-546. http://geodesic.mathdoc.fr/item/CMUC_1977__18_3_a11/