Bentley KW, Hardy DG (iunie 1967). „Novel analgesics and molecular rearrangements in the morphine-thebaine group. 3. Alcohols of the 6,14-endo-ethenotetrahydrooripavine series and derived analogs of N-allylnormorphine and -norcodeine”. J. Am. Chem. Soc. 89 (13): 3281–92. doi:10.1021/ja00989a032. PMID6042764.
Bentley KW, Hardy DG (iunie 1967). „Novel analgesics and molecular rearrangements in the morphine-thebaine group. 3. Alcohols of the 6,14-endo-ethenotetrahydrooripavine series and derived analogs of N-allylnormorphine and -norcodeine”. J. Am. Chem. Soc. 89 (13): 3281–92. doi:10.1021/ja00989a032. PMID6042764.