On the analytic theory of the equation $z^2u^{''}-f(z)u=0$. I, II
Differencialʹnye uravneniâ, Tome 8 (1972) no. 11, pp. 1999-2011
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@article{DE_1972_8_11_a11,
author = {V. K. Polishchuk},
title = {On the analytic theory of the equation $z^2u^{''}-f(z)u=0${.~I,} {II}},
journal = {Differencialʹnye uravneni\^a},
pages = {1999--2011},
year = {1972},
volume = {8},
number = {11},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1972_8_11_a11/}
}
V. K. Polishchuk. On the analytic theory of the equation $z^2u^{''}-f(z)u=0$. I, II. Differencialʹnye uravneniâ, Tome 8 (1972) no. 11, pp. 1999-2011. http://geodesic.mathdoc.fr/item/DE_1972_8_11_a11/