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@article{DAN_1964_159_4_a17, author = {R. S. Rutman and M. S. Epelman}, title = {Parametric invariance of linear dynamical systems}, journal = {Doklady Akademii Nauk}, pages = {764--766}, publisher = {mathdoc}, volume = {159}, number = {4}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a17/} }
R. S. Rutman; M. S. Epelman. Parametric invariance of linear dynamical systems. Doklady Akademii Nauk, Tome 159 (1964) no. 4, pp. 764-766. http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a17/