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@article{DAN_1958_118_6_a4, author = {Yu. I. Ermakov}, title = {Three-dimensional space with a cubic semimetric}, journal = {Doklady Akademii Nauk}, pages = {1070--1073}, publisher = {mathdoc}, volume = {118}, number = {6}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_118_6_a4/} }
Yu. I. Ermakov. Three-dimensional space with a cubic semimetric. Doklady Akademii Nauk, Tome 118 (1958) no. 6, pp. 1070-1073. http://geodesic.mathdoc.fr/item/DAN_1958_118_6_a4/