Tripathi, P. et al. 2010. Synthesis and Fungicidal Activities of Some 4-Aryl-1-aroyl-5-cyano-3-methyl pyrazolo [4,5-b], 3,4,7-trihydropyridin-6-ones Derivatives. Asian Journal of Chemistry. 18, 4 (Mar. 2010), 3120–3122.