期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1978
卷号：1
DOI：10.1155/S0161171278000307
出版社：Hindawi Publishing Corporation
摘要：Necessary and sufficient conditions are found for all oscillatory solutions of the equation (rn−1(t)(rn−2(t)(−−−(r2(t)(r1(t)y′(t))′)′−−−)′)′)′
