@article{DE_1995_31_6_a20,
     author = {V. N. Laptinskii and K. Kenzhebaev and V. V. Pugin},
     title = {On the analytic structure of periodic solutions of linear matrix differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1087--1089},
     publisher = {mathdoc},
     volume = {31},
     number = {6},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_6_a20/}
}