Bugalho SCS, Lapinski L, Cristiano MLS, Frija LMT, Fausto R. Vibrational spectra and structure of 1-phenyltetrazole and 5-chloro-1-phenyltetrazole. Vibrational Spectroscopy. 2002;30(2):213 - 225. doi:10.1016/S0924-2031(02)00028-0