Depth-dose distribution in potatoes with low-energy X-rays oleh Thi Nguyet Ha Nguyen, Kume Tamikazu, An Son Nguyen, Thi Minh Sang Nguyen, Thi Ngoc Ha Pham, Danh Hung Nguyen, Van Hai Cao, Quang Kien Nguyen, Huu Duc Nguyen, Thi Le Do