Kyle JA, Brown DA, Hill JK (October 2013). "Avanafil for erectile dysfunction". The Annals of Pharmacotherapy. 47 (10). Sage Publishing: 1312–1320. doi:10.1177/1060028013501989. PMID24259695. S2CID6562049.
US 6797709, Yamada K, Matsuki K, Omori K Kikkawa K, "Aromatic nitrogen-containing 6-membered cyclic compounds", issued 11 December 2003, assigned to Tanabe Seiyaku Co
Kyle JA, Brown DA, Hill JK (October 2013). "Avanafil for erectile dysfunction". The Annals of Pharmacotherapy. 47 (10). Sage Publishing: 1312–1320. doi:10.1177/1060028013501989. PMID24259695. S2CID6562049.
Kyle JA, Brown DA, Hill JK (October 2013). "Avanafil for erectile dysfunction". The Annals of Pharmacotherapy. 47 (10). Sage Publishing: 1312–1320. doi:10.1177/1060028013501989. PMID24259695. S2CID6562049.