%0 Journal Article %T Vertex Operators of Admissible Modules of $U_q(C^{(1)}_n)$ %A Naihuan Jing %A Yoshitaka Koyama %J Mathematics %D 1997 %I arXiv %X Using our recent bosonic realization of $U_q(\widehat{sp}_{2n})$, we construct explicitly the vertex operators for the level -1/2 modules of $U_q(\widehat{sp}_{2n})$ using bosonic fields. Our method contains a detailed analysis of all the q-intertwining relations. %U http://arxiv.org/abs/q-alg/9701036v1