N. S. RAO and J. RAO, “Synthesis and Antimicrobial Activity of 2-(Substituted phenyl)-5-carboxy methyl-4-thiozolidinone Derivatives of Pyrimidine Benzene Sulfanamide (Sulphadiazine)”, ajc, vol. 19, no. 4, pp. 3297–3298, Mar. 2010.