TY - JOUR AU - Yu. A. Aminov TI - Surfaces in $E^4$ with a~Gaussian curvature coinciding with a~Gaussian torsion up to the sign JO - Matematičeskie zametki PY - 1994 SP - 3 EP - 9 VL - 56 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1994_56_6_a0/ LA - ru ID - MZM_1994_56_6_a0 ER -