@article{DE_1970_6_11_a8,
     author = {V. V. Smagin and P. E. Sobolevskii},
     title = {Comparison theorems for the norms of the solutions of linear homogeneous differential equations in {Hilbert} spaces},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2005--2010},
     publisher = {mathdoc},
     volume = {6},
     number = {11},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_11_a8/}
}