A comparison principle for second-order differential equations
Doklady Akademii Nauk, Tome 135 (1960) no. 4, pp. 783-786
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@article{DAN_1960_135_4_a4,
author = {A. Yu. Levin},
title = {A comparison principle for second-order differential equations},
journal = {Doklady Akademii Nauk},
pages = {783--786},
year = {1960},
volume = {135},
number = {4},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_4_a4/}
}
A. Yu. Levin. A comparison principle for second-order differential equations. Doklady Akademii Nauk, Tome 135 (1960) no. 4, pp. 783-786. http://geodesic.mathdoc.fr/item/DAN_1960_135_4_a4/