%0 Journal Article %A B B Fredholm %A M P Abbracchio %A G Burnstock %A J W Daly %A T K Harden %A K A Jacobson %A P Leff %A M Williams %T Nomenclature and classification of purinoceptors. %D 1994 %J Pharmacological Reviews %P 143-156 %V 46 %N 2 %U https://pharmrev.aspetjournals.org/content/pharmrev/46/2/143.full.pdf