Subudhi, BB, PK Panda, BK Tosh, S Sahu, and P Majhi. 2007. “Synthesis and Biological Activity Evaluation of Some Azetidinone and Thiazolidinone Derivatives of Coumarins”. Dhaka University Journal of Pharmaceutical Sciences 4 (2). https://doi.org/10.3329/dujps.v4i2.207.