Low Temperature Heat Capacity and Thermal Analysis of Caffeine, Theophylline and Aminophylline
XU Fen, QIU Shu-Jun, LIANG Jian-Guo, WU Rui-Hua, SUN Li-Xian, LI Fen
Acta Physico-Chimica Sinica . 2010, (08): 2096 -2102 .  DOI: 10.3866/PKU.WHXB20100836