The COMPASS RICH-1 detector upgrade P. Abbon, M. Alekseev, H. Angerer, M. Apollonio, R. Birsa, P. Bordalo, F. Bradamante, A. Bressan, L. Busso, M. Chiosso et al. (61 more) Eur. Phys. J. Special Topics, 162 (2008) 251-257 Published online: 23 August 2008 DOI: 10.1140/epjst/e2008-00800-2