Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hajime Fujimura and Mikio Hori and Eiji Imai and Masakatsu Nozaki and Masayuki Niwa,"(1,2-diphenylethyl) piperazines as potent opiate-like analgesics; The unusual relationships between stereoselectivity and affinity to opioid receptor",Life Sciences,0024-3205,Elsevier BV,1983-01-01,33,,431-434,https://cir.nii.ac.jp/crid/1872835442955498112,https://doi.org/10.1016/0024-3205(83)90534-9