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2021. ASYMPTOTICS OF THE EIGENVALUES OF A PERIODIC BOUNDARY VALUE PROBLEM FOR A DIFFERENTIAL OPERATOR OF ODD ORDER WITH SUMMABLE OPERATOR. ҚазҰУ Хабаршысы. Математика, механика, информатика сериясы. 110, 2 (Sep. 2021), 3–17. DOI:https://doi.org/10.26577/JMMCS.2021.v110.i2.01.