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Additional information
Institute of Mathematics, Academy of Sciences of the Kazakh SSR, Alma-Ata. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 24, No. 4, pp. 116–130, July–August, 1983.
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Otelbaev, M. Asymptotic formulas for the eigenvalues of the Sturm-Liouville operator. Sib Math J 24, 586–598 (1983). https://doi.org/10.1007/BF00969556
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DOI: https://doi.org/10.1007/BF00969556