Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1981__17_1_a2, author = {Bartu\v{s}ek, Miroslav}, title = {On existence of oscillatory solution of the system of differential equations}, journal = {Archivum mathematicum}, pages = {7--10}, publisher = {mathdoc}, volume = {17}, number = {1}, year = {1981}, mrnumber = {672483}, zbl = {0471.34022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1981__17_1_a2/} }
Bartušek, Miroslav. On existence of oscillatory solution of the system of differential equations. Archivum mathematicum, Tome 17 (1981) no. 1, pp. 7-10. http://geodesic.mathdoc.fr/item/ARM_1981__17_1_a2/