Lattanzi, R; Spetea, M; Schüllner, F; Rief, SB; Krassnig, R; Negri, L; Schmidhammer, H (2005). „Synthesis and biological evaluation of 14-alkoxymorphinans. 22.(1) Influence of the 14-alkoxy group and the substitution in position 5 in 14-alkoxymorphinan-6-ones on in vitro and in vivo activities”. Journal of medicinal chemistry. 48 (9): 3372—8. PMID15857143. doi:10.1021/jm040894o.
Lattanzi, R; Spetea, M; Schüllner, F; Rief, SB; Krassnig, R; Negri, L; Schmidhammer, H (2005). „Synthesis and biological evaluation of 14-alkoxymorphinans. 22.(1) Influence of the 14-alkoxy group and the substitution in position 5 in 14-alkoxymorphinan-6-ones on in vitro and in vivo activities”. Journal of medicinal chemistry. 48 (9): 3372—8. PMID15857143. doi:10.1021/jm040894o.