Nguyen Thi Le Hien, Doan Thanh Dat, and Le Thi Phuong Nhung. “Villari Effect and Metal Magnetic Memory Technique in Inspection of Magnetic Materials under Stress”. Petrovietnam Journal 80 (August 12, 2020): 60 - 66. Accessed October 7, 2025. https://pvj.vn/index.php/TCDK/article/view/334.