“Sulphur, Organic Carbon, Organic Nitrogen, Iron Relationships and Diagenesis of Black Shales in Tenom and Ranau Regions , West Sabah, Malaysia”. Scientific Journal for Faculty of Science-Sirte University 5, no. 1 (April 17, 2025): 67–78. Accessed December 7, 2025. https://elc2.su.edu.ly/index.php/jsfsu/article/view/3039.