Bhat, Subrahmanya Ishwar. “Catalyst-Free Cascade Synthesis of Densely Functionalized Chromenes in Water”. Asian Journal of Chemistry 31, no. 11 (September 28, 2019): 2532–2536. Accessed May 20, 2024. https://asianpubs.org/index.php/ajchem/article/view/31_11_21.