@article{DE_1990_26_11_a5,
     author = {S. A. Grishin},
     title = {Construction of the laws of motion with prescribed integrals},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1884--1887},
     publisher = {mathdoc},
     volume = {26},
     number = {11},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_11_a5/}
}