%0 Journal Article %A Klyachko, Anton A. %T The Klein bottle group is not strongly verbally closed, though awfully close to being so %J Canadian mathematical bulletin %D 2021 %P 491-497 %V 64 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000582/ %R 10.4153/S0008439520000582 %F 10_4153_S0008439520000582