Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1975__11_1_a1, author = {Fut\'ak, J\'an}, title = {Oscillation of solutions of a non-linear delay differential equation of the fourth order}, journal = {Archivum mathematicum}, pages = {25--29}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {1975}, mrnumber = {0412560}, zbl = {0341.34063}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1975__11_1_a1/} }
Futák, Ján. Oscillation of solutions of a non-linear delay differential equation of the fourth order. Archivum mathematicum, Tome 11 (1975) no. 1, pp. 25-29. http://geodesic.mathdoc.fr/item/ARM_1975__11_1_a1/