Yildirir, Yilmaz, Melek Canbolat, Ali Disli, and Naki Colak. 2010. “Synthesis of Some Novel Derivatives of 2,6-Diaminoanthraquinone Dyes”. Asian Journal of Chemistry 20 (8):6411-16. https://asianpubs.org/index.php/ajchem/article/view/12990.