Valijonqizi, Y. M., N. R. Mukhtarovna, and M. S. Rakhmatjanovna. “Production of Complex Fertilizers by the Method of Decomposition of Poor Kyzylkum Phosphorites With a Reduced Nitric Acid Rate”. International Journal of Innovative Analyses and Emerging Technology, vol. 1, no. 5, Oct. 2021, pp. 121-6, https://openaccessjournals.eu/index.php/ijiaet/article/view/387.