@article{DE_1974_10_11_a19,
     author = {N. V. Gogiberidze and I. T. Kiguradze},
     title = {On the question of the disconjugacy of second order singular linear differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2064--2067},
     publisher = {mathdoc},
     volume = {10},
     number = {11},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_11_a19/}
}