Relationship between the inhibition of receptor-mediated increase of cytosolic [Ca++] and vasodilator effect of nitrates in patients with congestive heart failure: E.Negrescu, M.Popovich, G.Baldenkov, N.Mukharlyamov, A.Mazaev, V.Tkachuk. Moldavien Institute of Preventive and Clincal Medicine, Kishinev, Cardiology Reserch Centre, Moscow, USSR