Ali, M.U., Haque, M.Z., Maruf, M.A.A. and Sakia, M.A.A.-. 2005. Mass Fragmentation Pattern of Some Mono- and Di-Substituted Formamidines. Part-1. Mass Pattern of 1-Arylformamidines. Biological Sciences - PJSIR. 48, 6 (Dec. 2005), 386–388.