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Raffoul, Youssef N. Periodicity in general delay nonlinear difference equations using fixed point theory. (English) Zbl 1068.39021 J. Difference Equ. Appl. 10, No. 13-15, 1229-1242 (2004). Reviewer: Fozi Dannan (Damascus) MSC: 39A11 × Cite Format Result Cite Review PDF Full Text: DOI
Raffoul, Y. N. \(T\)-periodic solutions and a priori bounds. (English) Zbl 0981.39005 Math. Comput. Modelling 32, No. 5-6, 643-652 (2000). Reviewer: Nicolae Cotfas (Bucureşti) MSC: 39A11 × Cite Format Result Cite Review PDF Full Text: DOI