Abdullayev S.S, Mamajonov O.A, Alimov U.K, and Ortiqova S.S. “Cyclic Technology for Obtaining Double, Triple Superphosphate and Concentrated Nitrogen-Phosphorus Fertilizer from Low-Grade Phosphorites of Central Kyzylkum”. Eurasian Journal of Physics,Chemistry and Mathematics 6 (May 30, 2022): 49–54. Accessed November 28, 2024. https://geniusjournals.org/index.php/ejpcm/article/view/1551.