S. R. P. Maresi, T. S. Budikania, K. Afriani, A. N. Roziafanto, A. D. Mualim, and F. Kholidanata, “Early swelling kinetics of chitosan hydrogels under different acidity conditions for designing controlled-release fertilizers”, AES, vol. 4, no. 1, pp. 21–37, Jul. 2026.