Prabha Sharma, Vinay. “Synthesis and Bio-Assay of Some 3-(2H-1,4-Benzothiazin-3-Yl)-2-Methylchromones”. Asian Journal of Chemistry, vol. 16, no. 3, June 2016, pp. 1966-8, https://asianpubs.org/index.php/ajchem/article/view/14453.