Chow Khim, T., M. Ambar Yarmo, S. Radiman, and A. Ramli. “XPS Analysis of Dispersed Catalysts Prepared via w/O Microemulsion”.
Malaysian Journal of Science
, vol. 21, Dec. 2002, pp. 185-9, https://mjs.um.edu.my/index.php/MJS/article/view/8886.