Title of article :
On integrating factors and a formal perturbation method Original Research Article
Author/Authors :
W.T. van Horssen، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1997
Keywords :
integrating factor , First integrals , perturbation method , exact differential equations , formal asymptotic approximations , Duffing equation
Journal title :
Nonlinear Analysis Theory, Methods & Applications
Journal title :
Nonlinear Analysis Theory, Methods & Applications
