@article {hep-th/9503166, archivePrefix = {arXiv}, eprint = {hep-th/9503166}, primaryClass = {hep-th}, author = {J. Gomis and J. Herrero and K. Kamimura}, title = {W$(2,4)$, Linear and Non-local \W-Algebras in Sp(4) Particle Model}, year = {1995}, doi = {10.1016/0370-2693(95)00672-8}, url = {http://arxiv.org/abs/hep-th/9503166} }