TY - JOUR AU - Klyachko, Anton A. TI - The Klein bottle group is not strongly verbally closed, though awfully close to being so JO - Canadian mathematical bulletin PY - 2021 SP - 491 EP - 497 VL - 64 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/S0008439520000582/ DO - 10.4153/S0008439520000582 ID - 10_4153_S0008439520000582 ER -