Nguyen Huu Luong, Nguyen Hoang Viet, and Nguyen Van Dung. “Approaches to Enhance the Value of Ca Voi Xanh Gas via Its Transformation into Nanocarbon Materials”. Petrovietnam Journal 100 (October 31, 2018): 63-68. Accessed October 22, 2025. https://pvj.vn/index.php/TCDK/article/view/97.