Mahmut Kilic, Ahmet, Ozen Kilic, and A. Ekrem Aritan. 2010. “Duvertepe Kaolin Deposits in Balikesir (North-West Turkey) and Ceramic Properties”.
Asian Journal of Chemistry
18 (2):1352-60. https://asianpubs.org/index.php/ajchem/article/view/21155.