Bui Van Tai, Mai Van Phuoc, Pham Thi Phuong, and Dao Nam. 2022. “Research and Fabrication of Toxic Filter Materials from Tra Bac Coconut Shell Activated Carbon Applied in the Manufacture of Personal Respiratory Protection Devices”. Journal of Military Science and Technology, no. 79 (May):74-81. https://doi.org/10.54939/1859-1043.j.mst.79.2022.74-81.