Singh, S. S., and C.B.S. Sengar. “Infrared Spectra of 2-Amino Pyridine and Its Addition Compounds With Certain Inorganic Halides”. CHIMIA 22, no. 10 (October 31, 1968): 397. Accessed April 6, 2025. https://www.chimia.ch/chimia/article/view/1968_397.