TY - JOUR AU - È. R. Rozendorn TI - The nonembeddability of complete $q$-metrics of negative curvature in a~class of weakly nonregular surfaces JO - Sbornik. Mathematics PY - 1972 SP - 83 EP - 92 VL - 18 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1972_18_1_a4/ LA - en ID - SM_1972_18_1_a4 ER -