Per la equazione differenziale nonlineare con argomento ritardato si danno condizioni sufficienti per e per le quali tutte le soluzioni non sono oscillatorie.
@article{RLINA_1978_8_65_3-4_100_0, author = {Lu-San Chen and Fong-Ming Yu}, title = {Sufficient conditions for nonoscillation of forced n-th order retarded functional differential equations}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti}, volume = {64}, year = {1978}, pages = {100-103}, zbl = {0428.34047}, language = {en}, url = {http://dml.mathdoc.fr/item/RLINA_1978_8_65_3-4_100_0} }
Chen, Lu-San; Yu, Fong-Ming. Sufficient conditions for nonoscillation of forced n-th order retarded functional differential equations. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 64 (1978) pp. 100-103. http://gdmltest.u-ga.fr/item/RLINA_1978_8_65_3-4_100_0/
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