Elmusharaf, Hind Abderhman, Izeldin E. Barakat, and Ahmed E. M. Saeed. “Synthesis of Some Bigienelli Compounds from Thiosemicarbazide Use ZnCl2 As Catalyst under Solvent Free Condition”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 23, no. 1 (June 25, 2015): 383–391. Accessed September 11, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4231.