@article{DAN_1963_149_2_a10,
     author = {Z. I. Rekhlitskii},
     title = {Spectral criteria for the stability of solutions of linear differential equations with periodic coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {260--263},
     publisher = {mathdoc},
     volume = {149},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_2_a10/}
}