A. Roseline Emelda, N. Jayachandramani, and S. Ravichandran, “Synthesis, Characterization and Antimicrobial Study of a New Mannich Base, N-(1-Piperidinobenzyl)benzamide and its Transition Metal(II) Complexes”, ajc, vol. 20, no. 4, pp. 2485–2490, Mar. 2010.