S. Pant and R. Jadon, “Facile Syntheses and Studies of 8-Substituted-4-(4-tert-butylphenyl/4-acetamidophenyl)-2,3-dihydro-1,5-benzothiazepine-2-carboxylic Acids”, ajomc, vol. 5, no. 1, pp. 40–44, May 2020.