Dinira, Layta, 		Rumhayati, Barlah, 		Mardiana, Diah, AND 		Andayani, Ulfa.
" In situ Measurement of Phosphate using Fe3O4/Chelex®100-Agarose-Oxalic Acid Hydrogel in Diffusive Gradient in Thin Films" <em>Molekul</em> [Online], Volume 19 Number 2 (18 July 2024)