Sleema, B., and Geetha Parameswaran. “Kinetics and Mechanism of the Thermal Decomposition of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) Complexes of Vanillin-2-Aminopyridne”. Asian Journal of Chemistry, vol. 13, no. 2, Mar. 2010, pp. 709-20, https://asianpubs.org/index.php/ajchem/article/view/22654.