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Original Russian Text © N. F. Valeev, A. Eskermesuly, Ya. T. Sultanaev, 2016, published in Matematicheskie Zametki, 2016, Vol. 100, No. 3, pp. 465–468.
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Valeev, N.F., Eskermesuly, A. & Sultanaev, Y.T. On the deficiency index of a differential operator with fast oscillating coefficients. Math Notes 100, 486–490 (2016). https://doi.org/10.1134/S0001434616090170
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DOI: https://doi.org/10.1134/S0001434616090170