@article{IVM_1971_3_a14,
     author = {Sh. R. Sharipov and S. Kh. Mamashev},
     title = {The exceptional directions of a~certain system of three differential equations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {114--117},
     publisher = {mathdoc},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_3_a14/}
}