@article{SEMR_2022_19_1_a15, author = {V. A. Roman'kov}, title = {Positive elements and sufficient conditions for solvability of the submonoid membership problem for nilpotent groups of class two}, journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a}, pages = {387--403}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {2022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SEMR_2022_19_1_a15/} }