TY - JOUR AU - I. P. Egorov TI - Riemannian spaces of the first three lacunary types in the geometric sense JO - Doklady Akademii Nauk PY - 1963 SP - 730 EP - 732 VL - 150 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1963_150_4_a5/ LA - ru ID - DAN_1963_150_4_a5 ER -