@article{DE_1972_8_3_a22,
     author = {V. A. Pliss},
     title = {The behavior of the solutions of a periodic system of two differential equations that has an integral set of zero measure},
     journal = {Differencialʹnye uravneni\^a},
     pages = {553--555},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_3_a22/}
}