1. Enhancement of coronary vasodilator action of nicotinamide adenine dinucleotide by lidoflazine;Afonso;J. Pharmac. exp. Ther.,1971
2. Adenosine receptor activation by adenine nucleotides requires conversion of the nucleotides to adenosine;Bruns;Naunyn-Schmiedeberg's Arch. Pharmacol.,1980
3. Adenosine receptor activation in human fibroblasts: nucleoside agonists and antagonists;Bruns;Can. J. Physiol. Pharmac.,1980
4. Preparation and properties of 5′-nucleotidase from smooth muscle of small intestine;Burger;J. biol. Chem.,1970
5. A basis for distinguishing two types of purinergic receptor;Burnstock,1978