%0 Journal Article %A Yu. I. Ermakov %T Three-dimensional space with a cubic semimetric %J Doklady Akademii Nauk %D 1958 %P 1070-1073 %V 118 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_118_6_a4/ %G ru %F DAN_1958_118_6_a4