Mutalova, M. A. ., D. A. K. . Abdujabborova, G. N. . Fayzieva, and M. G. K. . Nazirkulova. “Improvement Of The Technology For Extracting Tungsten Industrial Products From The Stale Tailings Of The Ingichkin Factory”. The American Journal of Engineering and Technology, vol. 3, no. 02, Feb. 2021, pp. 116-22, doi:10.37547/tajet/Volume03Issue02-17.