“SORPTION AND STUDY OF IONS OF Cu(II), Zn(II) AND Ni(II) IN SYNTHESISED SORBENT BASED ON UREA, FORMALDEHYDE AND DIPHENYLCARBAZONE”, SJFSU, vol. 30, no. 6, p. 110, Jan. 2025, Accessed: Jan. 09, 2026. [Online]. Available: https://journal.fdu.uz/index.php/sjfsu/article/view/5484