Białek, M., Ł. Korach, and K. Czaja. “Copolymerization of Ethylene With 1-Hexene over Vanadium Catalysts Immobilized on Sol-Gel Silica”. Polimery, vol. 52, no. 11-12, Aug. 2022, pp. 889-92, https://ichp.vot.pl/index.php/p/article/view/1486.