%0 Journal Article %T Extensions of vector bundles and rationality of certain moduli spaces of stable bundles %A Wei-ping Li %A Zhenbo Qin %J Mathematics %D 1996 %I arXiv %X In this paper, it is proved that certain stable rank-3 vector bundles can be written as extensions of line bundles and stable rank-2 bundles. As an application, we show the rationality of certain moduli spaces of stable rank-3 bundles over the projective plane P^2. %U http://arxiv.org/abs/math/9607224v1