Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1980_9_a5, author = {I. V. Protasov}, title = {Order-convergence in the lattice of subgroups of a~topological group}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {25--29}, publisher = {mathdoc}, number = {9}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_9_a5/} }
I. V. Protasov. Order-convergence in the lattice of subgroups of a~topological group. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1980), pp. 25-29. http://geodesic.mathdoc.fr/item/IVM_1980_9_a5/