A. S. Zdravković, L. B. Nikolić, S. S. Ilić-Stojanović, V. D. Nikolić, S. R. Savić, and A. J. Kapor, “The evaluation of temperature and pH influences on equilibrium swelling of poly(N-isopropylacrylamide-co-acrylic acid) hydrogels”, Hem Ind, vol. 71, no. 5, pp. 395–405, Nov. 2017, doi: 10.2298/HEMIND161018001Z.