Text ( visual ) : unmediated Workshop on Di-lepton Experiments at the 50-GeV PS : KEK, Tsukuba, Japan, October 29-30, 1999 / edited by J. Chiba and S. Sawada. -- Tsukuba : High Energy Accelerator Research Organization , 2000.10. -- 96 p. : ill. ; 30 cm. -- (KEK proceedings ; 2000-19). -- (BA57396798) ; https://ci.nii.ac.jp/ncid/BA57396798 Author Heading(s): 千葉, 順成 ; 澤田, 真也 ; 高エネルギー加速器研究機構