Kumar Debnath, Rajib, Apurba Kalita, Biplab Mondal, and Jatindra Nath Ganguli. “One-Pot Synthesis of Benzoxazines Through Mannich Condensations”. Asian Journal of Chemistry 26, no. 19 (September 18, 2014): 6519–6522. Accessed April 6, 2025. https://asianpubs.org/index.php/ajchem/article/view/26_20_48.