Abad-Zapatero C, Metz JT (April 2005). "Ligand efficiency indices as guideposts for drug discovery". Drug Discovery Today. 10 (7): 464–469. doi:10.1016/S1359-6446(05)03386-6. PMID15809192.
Hopkins AL, Groom CR, Alex A (May 2004). "Ligand efficiency: a useful metric for lead selection". Drug Discovery Today. 9 (10): 430–431. doi:10.1016/S1359-6446(04)03069-7. PMID15109945.
Shultz MD (November 2013). "Setting expectations in molecular optimizations: Strengths and limitations of commonly used composite parameters". Bioorganic & Medicinal Chemistry Letters. 23 (21): 5980–5991. doi:10.1016/j.bmcl.2013.08.029. PMID24018190.
Abad-Zapatero C, Metz JT (April 2005). "Ligand efficiency indices as guideposts for drug discovery". Drug Discovery Today. 10 (7): 464–469. doi:10.1016/S1359-6446(05)03386-6. PMID15809192.
Hopkins AL, Groom CR, Alex A (May 2004). "Ligand efficiency: a useful metric for lead selection". Drug Discovery Today. 9 (10): 430–431. doi:10.1016/S1359-6446(04)03069-7. PMID15109945.
Shultz MD (November 2013). "Setting expectations in molecular optimizations: Strengths and limitations of commonly used composite parameters". Bioorganic & Medicinal Chemistry Letters. 23 (21): 5980–5991. doi:10.1016/j.bmcl.2013.08.029. PMID24018190.