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@article{IVM_1960_6_a15, author = {A. E. Liber}, title = {Differential comitants of various linear objects}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {158--162}, publisher = {mathdoc}, number = {6}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1960_6_a15/} }
A. E. Liber. Differential comitants of various linear objects. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1960), pp. 158-162. http://geodesic.mathdoc.fr/item/IVM_1960_6_a15/