Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1982_3_a9, author = {V. P. Skripnik}, title = {Degenerate linear systems}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {62--67}, publisher = {mathdoc}, number = {3}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_3_a9/} }
V. P. Skripnik. Degenerate linear systems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1982), pp. 62-67. http://geodesic.mathdoc.fr/item/IVM_1982_3_a9/