@article{GDZPPN002477629,
title = {Second Order Nonlinear Oscillation - Deviating Arguments.},
journal = {Monatshefte f\"ur Mathematik},
volume = {75},
year = {1971},
pages = {341-345},
zbl = {0204.40802},
url = {http://dml.mathdoc.fr/item/GDZPPN002477629}
}
Teufel, Hugo, Jr. Second Order Nonlinear Oscillation - Deviating Arguments.. Monatshefte für Mathematik, Tome 75 (1971) pp. 341-345. http://gdmltest.u-ga.fr/item/GDZPPN002477629/