Зведений каталог бібліотек Львова
Ilkiv, V. S. Nonuniqueness conditions for the solutions of the Dirichlet problem in a unit disk in terms of the coefficients of differential equation [Текст] / V.S. Ilkiv // Journal of Mathematical Sciences. — 2011. — Iss. 4. — P. 182-197.
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Journal of Mathematical Sciences [Текст]. — 2011. — Iss. 4.
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