Tejumola, H. O. Periodic solutions of certain systems of non-linear second order differential equations. (English) Zbl 0354.34040 Rend. Circ. Mat. Palermo, II. Ser. 24, 140-150 (1975). MSC: 34C25 × Cite Format Result Cite Review PDF Full Text: DOI
Tejumola, H. O. On the boundedness and periodicity of solutions of certain third-order non-linear differential equations. (English) Zbl 0215.14806 Ann. Mat. Pura Appl., IV. Ser. 83(1969), 195-212 (1970). MSC: 34D40 34C11 34C25 34A34 34D20 × Cite Format Result Cite Review PDF Full Text: DOI
Tejumola, H. O. Boundedness and periodicity of solutions of certain fourth-order differential equations. (English) Zbl 0193.05402 Ann. Mat. Pura Appl., IV. Ser. 80, 177-196 (1968). × Cite Format Result Cite Review PDF Full Text: DOI