... C20,π and the conditions qπ − q00andqπ − q0/ 0hold. Based on the asymptotic expressions of the fundamental solutions of 1.1 and theasymptotic formulas for eigenvalues of the ... 1, Frederick Ungar, New York, NY, USA, 1967.5 F. S. Rofe-Beketov and A. M. Kholkin, Spectral Analysis of Differential Operators, vol. 7 of World ScientificMonograph Series in Mathematics, World ... Mamedov and H. Menken, “Asymptotic formulas for eigenvalues and eigenfunctions of anonselfadjoint Sturm-Liouville operator,” in Further Progress in Analysis, H.G.W.Begehr,A.O.C¸elebi, and R. P....