Sharma, Varun, Bubun Banerjee, Gurpreet Kaur, and Vivek Kumar Gupta. “X-Ray Crystal Structure Analysis of 5-bromospiro[indoline-3,7’-pyrano[3,2-C:5,6-C’]dichromene]-2,6’,8’-Trione”. European Journal of Chemistry 12, no. 2 (June 30, 2021): 187–191. Accessed April 28, 2024. https://www.eurjchem.com/index.php/eurjchem/article/view/2086.