Özcan, N., and U. Ural. “Phosphodiesterase Inhibitors and Using in the Treatment of Congestive Heart Failure: [FOSFODİESTERAZ İNHİBITÖRLERİ VE KONJESTİF KALP YETMEZLİGİNDE KULLANILIŞLARI]”. European Journal of Therapeutics, vol. 4, no. 1, Jan. 1993, pp. 124-33, doi:10.58600/eurjther.19930401-1159.