У.Ш.Темиров, Донияров Н.А., Усанбаев Н.Х., Тагаев И.А., Азимова Д.А. Фосфор -гумусли ўғитларнинг иқ спектроскопик ва ренгенографик тахлили. International Journal of Advanced technology and natural sciences Engineering Technology Vol.1(2) 2020 18 – 26 б.

Temirov U.Sh., Doniyarov N.A., Usanbaev N.Kh., I.A. Tagaev, B.A. Juraqulov. Organomineral fertilizers based on sediments of waste waters and phosphorites of central Kysilkum. International Journal of Advanced technology and natural sciences Engineering Technology Vol.1(2) 2020, рр 60-68.

GOST 30181.3-94. Mineral fertilizer. A method for determining the mass fraction of nitrogen in fertilizers containing nitrogen in nitrate form. - M .: IPK Publishing House of Standards, 1996. - 6 p.

GOST 24596.4-81. Feed phosphate. Calcium determination methods. - M.: IPK Publishing House of Standards, 2004. - 3 p.

GOST 24596.5-81. Feed phosphate. Method for determining the pH of a solution or suspension. - M .: IPK Publishing house of standards, 2004. - 2 p.

Nabiev M.N. Phosphorite nitric acid processing. Tashkent.: Publishing House of the the FAN UzSSR, 1957. - P 18.

Seitnazarov A.R., Turdialiev U.M., Namazov Sh.S., Zhumaev M.Sh., Beglov B.M. Processing of chemically enriched phosphoconcentrate of Central Kyzyl Kum on NP, PK and NPK fertilizers // Reports of the Academy of Sciences of the Republic of Uzbekistan. - Tashkent, 2014. - No. 5. - P. 42-47.

Yulbarsova M.V., Tajiev S.M., Tukhtaev S. Obtaining complex fertilizers from phosphoresites of the central Kyzylkum // Scientific-technical and practical journal of composite materials, - 2018. - №2. - 113-116-p.