Siregar, S, A. D. Hidayaturobbi, B. A. Wijaya, S N Listiani, T Adiningrum, Irwan Irwan, and A I Pratomo. “Laboratory Experiments on Enhanced Oil Recovery With Nitrogen Injection”. Journal of Engineering and Technological Sciences 39, no. 1 (July 1, 2007): 20-27. Accessed October 8, 2025. https://journals.itb.ac.id/index.php/jets/article/view/4.