Pielichowski, J., P. Penczek, D. Bogdal, E. Wolff, and J. Gorczyk. “Microwave Assisted Synthesis of Unsaturated Polyester Resins”. Polimery, vol. 49, no. 11-12, Sept. 2022, pp. 763-6, https://ichp.vot.pl/index.php/p/article/view/1809.