Grabowska, B., and M. Holtzer. “Application of Microwave Radiation for Crosslinking of Sodium Polyacrylate Silica Gel System Used As a Binder in Foundry Sands”. Polimery, vol. 52, no. 11-12, Aug. 2022, pp. 841-7, https://ichp.vot.pl/index.php/p/article/view/1479.