@article{TIMM_2013_19_1_a6,
     author = {G. A. Grigoryan},
     title = {Some properties of solutions of second-order linear ordinary differential equations},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {69--80},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2013_19_1_a6/}
}