@article{DE_1974_10_4_a21,
     author = {V. N. Laptinskii},
     title = {Estimates of the solutions of the system $x''' =A(t)x$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {755--758},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_4_a21/}
}