@article{FAA_1986_20_1_a5,
     author = {G. S. Petrov},
     title = {Elliptic integrals and their nonoscillation},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {46--49},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1986_20_1_a5/}
}