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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 24, No. 4, pp. 513–520, July–August, 1972.
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Shevelo, V.N., Varekh, N.V. Oscillation of solutions of high order linear differential delay equations. Ukr Math J 24, 410–416 (1972). https://doi.org/10.1007/BF01314692
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DOI: https://doi.org/10.1007/BF01314692