%0 Journal Article %A E. T. Ivlev %T Coordinate frames of submanifolds in the theory of pairs of complexes in $P_3$ %J Doklady Akademii Nauk %D 1961 %P 538-540 %V 139 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a5/ %G ru %F DAN_1961_139_3_a5