RASULOV, A. A.; NAMAZOV, S. S.; SULTONOV, B. E. Nitrogen-phosphate Fertilizers Based on Activation of Phosphorite Powder with Partially Ammoniated Mix of Phosphoric and Sulphuric Acids. Chemical Science International Journal, v. 29, n. 9, p. 1-10, 31 dez. 2020.