Fiegel, Joachim, Wolfram Reddig, and Joachim Wolff. “Future Requirements Imposed on Reactive Dyeing from the Point of View of a Dyestuff Producer”. Tekstil 44, no. 8 (August 31, 1995): 366–369. Accessed April 26, 2026. https://tekstil.hist.hr/index.php/tekstil/article/view/1438.