Casy AF, Beckett AH, Hall GH, Vallance DK (December 1961). "Chemistry and pharmacology of 4-alkoxy-piperidines related to reversed esters of pethidine". Journal of Medicinal and Pharmaceutical Chemistry. 4 (3): 535–51. doi:10.1021/jm50019a012. PMID13877295.
Beckett AH, Casy AF (February 1965). "Analgesics and their antagonists: biochemical aspects and structure-activity relationships". Progress in Medicinal Chemistry. 4: 171–218. doi:10.1016/s0079-6468(08)70169-3. ISBN9780444533234. PMID5319798.
nih.gov
pubmed.ncbi.nlm.nih.gov
Casy AF, Beckett AH, Hall GH, Vallance DK (December 1961). "Chemistry and pharmacology of 4-alkoxy-piperidines related to reversed esters of pethidine". Journal of Medicinal and Pharmaceutical Chemistry. 4 (3): 535–51. doi:10.1021/jm50019a012. PMID13877295.
Beckett AH, Casy AF (February 1965). "Analgesics and their antagonists: biochemical aspects and structure-activity relationships". Progress in Medicinal Chemistry. 4: 171–218. doi:10.1016/s0079-6468(08)70169-3. ISBN9780444533234. PMID5319798.