Ngoan, Dang. 2002. “INTENSIFYING PROCESS OF METALLIC DIFFUSION WHEN CHEMICAL HEAT TREATMENT BY ADDING LOW MELTING TEMPERATURE ELEMENTS IN DIFFUSIVE COMPOSITION”. Science and Technology Development Journal 5 (3&4), 51-53. https://doi.org/https://doi.org/10.32508/stdj.v5i3&4.3415.