@misc{AL_2020_59_4_a6, title = {Sessions of the seminar {{\textquotedblleft}Algebra} i {Logika{\textquotedblright}}}, journal = {Algebra i logika}, pages = {507--509}, publisher = {mathdoc}, volume = {59}, number = {4}, year = {2020}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_2020_59_4_a6/} }