@article{DE_1980_16_11_a20,
     author = {Yu. I. Domshlak},
     title = {A {Sturm} comparison theorem for second order equations in {Hilbert} space and partial differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2092--2094},
     publisher = {mathdoc},
     volume = {16},
     number = {11},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_11_a20/}
}