@article{MZM_1987_41_1_a5,
     author = {V. V. Kazakov},
     title = {Linear irreducibility of one form of differential equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {48--56},
     year = {1987},
     volume = {41},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1987_41_1_a5/}
}