Muldakhmetov, Zainulla, Arstan Gazaliev, Alma Zhakina, Evgeniy Vasilets, и Oksana Arnt. «SYNTHESIS AND STUDY OF THE STRUCTURE OF THE N-DERIVATIVE OF HUMIC ACIDS BASED ON COAL MINING WASTE». Academic Scientific Journal of Chemistry, no. 3 (сентябрь 30, 2022): 123–134. просмотрено декабрь 5, 2025. http://89.250.84.46/chemistry-technology/article/view/4243.