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@article{IVM_1981_10_a3, author = {I. I. Endovickii}, title = {On the question of oscillations of solutions of second-order linear equations}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {18--22}, publisher = {mathdoc}, number = {10}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1981_10_a3/} }
I. I. Endovickii. On the question of oscillations of solutions of second-order linear equations. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1981), pp. 18-22. http://geodesic.mathdoc.fr/item/IVM_1981_10_a3/