Oscillation and nonoscillation criteria for $y''(x)+f(y(x))p(x)=0$.
Howard, H. C.
Pacific J. Math., Tome 12 (1962) no. 4, p. 243-251 / Harvested from Project Euclid
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Publié le : 1962-05-14
Classification:  34.42 
@article{1103036721,
     author = {Howard, H. C.},
     title = {Oscillation and nonoscillation criteria for $y''(x)+f(y(x))p(x)=0$.},
     journal = {Pacific J. Math.},
     volume = {12},
     number = {4},
     year = {1962},
     pages = { 243-251},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1103036721}
}

Howard, H. C. Oscillation and nonoscillation criteria for $y''(x)+f(y(x))p(x)=0$.. Pacific J. Math., Tome 12 (1962) no. 4, pp.  243-251. http://gdmltest.u-ga.fr/item/1103036721/