@article{DE_1987_23_5_a4,
     author = {\`E. I. Grudo},
     title = {On the quasiperiodic solutions of linear inhomogeneous differential systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {768--774},
     publisher = {mathdoc},
     volume = {23},
     number = {5},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_5_a4/}
}