Russek H. I. (1966). «The therapeutic role of coronary vasodilators: glyceryl trinitrate, isosorbide dinitrate, and pentaerythritol tetranitrate.». American Journal of Medical Science252 (1): 9–20. doi:10.1097/00000441-196607000-00002. PMID4957459.
Russek H. I. (1966). «The therapeutic role of coronary vasodilators: glyceryl trinitrate, isosorbide dinitrate, and pentaerythritol tetranitrate.». American Journal of Medical Science252 (1): 9–20. doi:10.1097/00000441-196607000-00002. PMID4957459.