Jing-Jing Xia, Guan-Wu Wang. One-Pot Synthesis and Aromatization of 1,4-Dihydropyridines in Refluxing Water (abstract). Synthesis. 2005, 2005: 2379–2383 [2009-10-14]
Birch, Edouard A. Karakhanov. Preparation of some N-substituted 1,4-dihydropyridines by metal–ammonia reactions. J. Chem. Soc., Chem. Commun. 1975, (12):
Yanez, C.; Squella, J. A. Electrolytic Oxidation of C4-Nitrofuryl 1,4-Dihydropyridines in Nonaqueous Medium. Journal of The Electrochemical Society. 2007