Protonation of Caffeine: A Theoretical and Experimental Study

“Protonation of Caffeine: A Theoretical and Experimental Study”

       M. Bahrami, M. Tabrizchi, H. Farrokhpour, Chem. Phys. 222 (415) 2013. 

https://www.sciencedirect.com/science/article/pii/S0301010413000517