Dergiler / Technical University of Istanbul Bulletin / 1992 / Cilt: 45 - Sayı: 1A perturbation analysis of nonlinear forced oscillationsKoncay HÜSEYİN,Shiqi WANGDergiTechnical University of Istanbul BulletinSayı1992 · Cilt: 45 - Sayı: 1Sayfa87–98DOI—