RT Journal Article SR Electronic T1 Classification of calcium channels and the sites of action of drugs modifying channel function. JF Pharmacological Reviews JO Pharmacol Rev FD American Society for Pharmacology and Experimental Therapeutics SP 363 OP 376 VO 44 IS 3 A1 M Spedding A1 R Paoletti YR 1992 UL http://pharmrev.aspetjournals.org/content/44/3/363.abstract AB