Asiri, Abdullah Mohamed. “Synthesis and Use of Photochromic Compounds As Smart Switchable Glazing for Ultraviolet Shielding”. Bulletin of Chemists and Technologists of Bosnia and Herzegovina, no. 3 Special Issue, Oct. 2018, p. 5, https://glashem.pmf.unsa.ba/index.php/bctbh/article/view/397.