Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) GOUR-SALIN BJ.,E-64 [trans-epoxysuccinyl-L-leucylamid-(4-guanidino) butane] analogues as inhibitors of cysteine proteinases: investigation of S_2 subsite interactions,Biochem J,,,1994,299,,389-392,https://cir.nii.ac.jp/crid/1574231876419207680,