Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1971__75_177566, author = {Hugo, Jr. Teufel}, title = {Second {Order} {Nonlinear} {Oscillation} - {Deviating} {Arguments.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {341--345}, publisher = {mathdoc}, volume = {75}, year = {1971}, zbl = {0204.40802}, url = {http://geodesic.mathdoc.fr/item/MOMA_1971__75_177566/} }
Hugo, Jr. Teufel. Second Order Nonlinear Oscillation - Deviating Arguments.. Monatshefte für Mathematik, Tome 75 (1971), pp. 341-345. http://geodesic.mathdoc.fr/item/MOMA_1971__75_177566/