1. Effects of xanthine derivatives on lipolysis and on adenosine 3′5′-monophosphate phosphodiesterase activity;Beavo;Molec. Pharmacol.,1970
2. No relation between coffee and blood pressure;Betrand;New Engl. J. Med.,1978
3. Caffeine content of common beverages;Bunker;J. Am. Diet. Ass.,1979
4. How much caffeine in the cup?;Burg;Tea Coffee Trade J.,1975
5. Effect of orally administered caffeine and theophylline on tissue concentrations of 3′5′ cyclic AMP and phosphodiesterase;Berg,1975