Muratova, Manzura. “METHOD FOR PRODUCING A FIRE RETARDANT AGENT WITH NITRIC ACID SOLUTIONS OF VARIOUS CONCENTRATIONS”. Scientific and Technical Journal of Namangan Institute of Engineering and Technology 10, no. 2 (June 30, 2025): 183–191. Accessed December 6, 2025. http://niet.uz/index.php/nj/article/view/800.