Patkar KA, Yan X, Murray TF, Aldrich JV (julio de 2005). «[Nalpha-benzylTyr1,cyclo(D-Asp5,Dap8)]- dynorphin A-(1-11)NH2 cyclized in the "address" domain is a novel kappa-opioid receptor antagonist». J. Med. Chem.48 (14): 4500-3. PMID15999987. doi:10.1021/jm050105i.
Patkar KA, Yan X, Murray TF, Aldrich JV (julio de 2005). «[Nalpha-benzylTyr1,cyclo(D-Asp5,Dap8)]- dynorphin A-(1-11)NH2 cyclized in the "address" domain is a novel kappa-opioid receptor antagonist». J. Med. Chem.48 (14): 4500-3. PMID15999987. doi:10.1021/jm050105i.