Tran Trung , Dung, Carl H.Sondergeld, and Jean-Claude Roegiers. “Different Forms of Gassmann Equation and Implications for the Estimation of Rock Properties”. Petrovietnam Journal 100 (October 31, 2017): 23 - 29. Accessed April 2, 2026. http://tapchidaukhi.com/index.php/TCDK/article/view/230.