Trang, Nguyen Thu, Roland T. Tsunoda, and Le Huy Minh. “On New Detailed Ionogram Signatures of Equatorial Plasma Bubbles from Non-Equatorial Station During Low Solar Activity”. Vietnam Journal of Earth Sciences 37, no. 4 (December 5, 2015): 307–317. Accessed November 22, 2024. https://vjs.ac.vn/index.php/jse/article/view/8059.