共 50 条
- [32] EXACT FORMULAS FOR PERIODIC-SOLUTIONS OF X(T+1)=ALPHA-(-X(T)+BX3(T)) ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK, 1986, 37 (05): : 765 - 775
- [33] CLOSED ORBIT SOLUTIONS TO X''+G(X) (X')2 +F(X)=0 NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1971, 18 (05): : 773 - &
- [34] ON PERIODIC SOLUTION OF X''' + AX'' + BX' + G(X) = 0 CANADIAN MATHEMATICAL BULLETIN, 1967, 10 (01): : 75 - &
- [40] On solutions of functional-differential equations f′(x) = a(x)f(g(x)) + b(x)f(x) + c(x) in the large Israel Journal of Mathematics, 2007, 162 : 335 - 348