M. . Mojtahedzadeh, H. . Khalili, A. . Mohagheghi, and S. . Dashti-Khavidaki, “Heparin Resistance During and Post-Intravenous Nitroglycerin Infusion: Heparin and nitroglycerin interaction”, Iran J Pharm Sci, vol. 1, no. 2, pp. 77–80, Jun. 2005.