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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 32, No. 2, pp. 248–252, March–April, 1980.
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Rybak, M.A. Asymptotic distribution of the eigenvalues of some boundary-value problems for Sturm-Liouville operator equations. Ukr Math J 32, 159–162 (1980). https://doi.org/10.1007/BF01092795
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DOI: https://doi.org/10.1007/BF01092795