Effect of D600, practolol, and alterations in magnesium on ionized calcium concentration-response relationships in the intact dog heart.
Bristow MR, Daniels JR, Kernoff RS, Harrison DC. Effect of D600, practolol, and alterations in magnesium on ionized calcium concentration-response relationships in the intact dog heart. Circ Res. 1977 Oct; 41(4):574-81.