%0 Journal Article %T On Some Sigma Models with Potentials and the Klein-Gordon Type Equations %A R. Myrzakulov %J Physics %D 1998 %I arXiv %X The gauge equivalent counterparts of the some (1+1)-, or (2+0)-dimensional sigma models with potentials are found. The gauge equivalence between the some soliton equations of spin-phonon systems and the Yajima-Oikawa and Ma equations are also established. %U http://arxiv.org/abs/hep-th/9812214v1