Huynh, Phuong, Oanh Luu, Huong Huynh, and Mai Le. 2015. “Correction of Matrix Effects in XRF With the Samples of Two Elements of Fe-Cr”. Science and Technology Development Journal 18 (3), 5-9. https://doi.org/https://doi.org/10.32508/stdj.v18i3.813.