%0 Journal Article %T Spectra of finite symplectic and orthogonal groups %A A. A. Buturlakin %J Mathematics %D 2011 %I arXiv %X The spectra of a finite group is the set of its element orders. We obtain an arithmetic description of finite symplectic and orthogonal groups. In particular, a description of spectra of all finite simple simplectic and orthogonal groups is obtained. %U http://arxiv.org/abs/1102.3021v1