CHAVHAN, N.M., et al. “Synthesis and Biological Evaluation of Some Heterocycles from 1-Phenyl-3-(pyridine-3-Yl)-1H-Pyrazole-4-Carbaldehyde”. Asian Journal of Chemistry, vol. 22, no. 6, May 2010, pp. 4255-60, https://asianpubs.org/index.php/ajchem/article/view/16802.