El-Khalik, N. Abd. “Evaluation of Some Chromene Derivatives As Additives in Fire Retardant and Anticorrosive Coating Composition”. The International Journal of Science & Technoledge 4, no. 7 (July 31, 2016). Accessed July 7, 2024. http://internationaljournalcorner.com/index.php/theijst/article/view/123930.