The Effects of Tolazoline, Nitroprusside, Nitroglycerin, Isoproterenol and Hydralazine on Pulmonary Circulation Early after Heart Valve Replacement - Goenen, M J; Leenaert, L; Petein, M; Pouleur, H; Jaumin, P; Tremouroux, J (The Thoracic and Cardiovascular Surgeon, 1982)