Si dimostrano tre teoremi sugli integrali di una equazione funzionale, differenziale, non lineare con argomento ritardato.
@article{RLINA_1977_8_62_3_321_0, author = {Lu-San Chen and Cheh-Chih Yeh}, title = {Comparison theorems and integrability of nonoscillatory solutions of n-th order functional differential equations}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti}, volume = {62}, year = {1977}, pages = {321-324}, zbl = {0376.34019}, mrnumber = {0497654}, language = {en}, url = {http://dml.mathdoc.fr/item/RLINA_1977_8_62_3_321_0} }
Chen, Lu-San; Yeh, Cheh-Chih. Comparison theorems and integrability of nonoscillatory solutions of n-th order functional differential equations. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti, Tome 62 (1977) pp. 321-324. http://gdmltest.u-ga.fr/item/RLINA_1977_8_62_3_321_0/
[1] Certain results on nonoscillatory and asymptotic nature of delay equations, «Hiroshima Math. J.», 5, 7-15. | MR 367404 | Zbl 0302.34088
and (1975) -[2] Integrability of nonoscillatory solutions of a delay differential equations, «Hiroshima Math. J.», 6, 293-295. | MR 417537
(1976) -[3] On the oscillatory behavior of bounded solution of higher order differential equations, «J. Diff. Equs.», 19, 167—175. | MR 382781 | Zbl 0333.34030
(1975) -[4] Oscillation theorems for second order non-homogenous linear differential equations, «J. Math. Anal. Appl.», 53, 550-553. | MR 402186 | Zbl 0328.34033
(1976) -