@article{1102991605,
author = {Macki, Jack W. and Wong, James S. W.},
title = {Oscillation of solutions to second-order nonlinear differential equations.},
journal = {Pacific J. Math.},
volume = {27},
number = {3},
year = {1968},
pages = { 111-117},
language = {en},
url = {http://dml.mathdoc.fr/item/1102991605}
}
Macki, Jack W.; Wong, James S. W. Oscillation of solutions to second-order nonlinear differential equations.. Pacific J. Math., Tome 27 (1968) no. 3, pp. 111-117. http://gdmltest.u-ga.fr/item/1102991605/