Wermuth CG, Ganellin CR, Lindberg P, Mitscher LA (1998). “Glossary of terms used in medicinal chemistry (IUPAC Recommendations 1998)”. Pure and Applied Chemistry70 (5): 1129–1143. doi:10.1351/pac199870051129.
Duarte, CD (2007), “Privileged structures: a useful concept for the rational design of new lead drug candidates”, Mini Rev Med Chem7 (11): 1108–1119, doi:10.2174/138955707782331722, PMID18045214.
Ehrlich P (1909). “Über den jetzigen Stand der Chemotherapie”. Ber. Dtsch. Chem. Ges.42: 17–47. doi:10.1002/cber.19090420105.
Duarte, CD (2007), “Privileged structures: a useful concept for the rational design of new lead drug candidates”, Mini Rev Med Chem7 (11): 1108–1119, doi:10.2174/138955707782331722, PMID18045214.
Kier LB (September 1967). “Molecular orbital calculation of preferred conformations of acetylcholine, muscarine, and muscarone”. Mol. Pharmacol.3 (5): 487–94. PMID6052710.