1. Porous fluorocarbon (Teflon) sheets from Goretex Japan, Specification Number 116-027. Available from Japan Gore-Tex Inc., 1-42-5, Akazutsumi, Setagaya-ku, Tokyo, 156, Japan.
2. Belle collaboration, Technical Design Report, KEK Proceedings 95-1.
3. Aerogel Cherenkov counter for the BELLE experiment
4. T. Ooba et al., to be published as KEK Report in 1996.