@article{CHEB_2021_22_1_a34, author = {A. A. Trofimuk}, title = {A remark on a product of two formational tcc-subgroups}, journal = {\v{C}eby\v{s}evskij sbornik}, pages = {495--501}, publisher = {mathdoc}, volume = {22}, number = {1}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CHEB_2021_22_1_a34/} }