Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_2015_12_a1, author = {V. P. Derevenskii}, title = {Matrix {Lagrange} equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {14--26}, publisher = {mathdoc}, number = {12}, year = {2015}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2015_12_a1/} }
V. P. Derevenskii. Matrix Lagrange equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2015), pp. 14-26. http://geodesic.mathdoc.fr/item/IVM_2015_12_a1/