Bui Anh Tuan, and Hoang Thi Phuong. “Study on the Influence of Molar Ratio of Catalyst on Nanosilica Material Structure”. Petrovietnam Journal 70 (July 31, 2018): 41-49. Accessed July 28, 2026. https://tapchidaukhi.vn/index.php/TCDK/article/view/72.