TY - JOUR AU - Sapir, Mark TI - A Higman embedding preserving asphericity JO - Journal of the American Mathematical Society PY - 2014 SP - 1 EP - 42 VL - 27 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-2013-00776-6/ DO - 10.1090/S0894-0347-2013-00776-6 ID - 10_1090_S0894_0347_2013_00776_6 ER -