Korach Ł., Czaja K, Kovaleva N. Silica powder obtained by sol-gel method as a support of organometallic vanadium catalyst for ethylene polymerization. p [Internet]. 2022 Sep. 1 [cited 2024 Dec. 4];49(9):641-5. Available from: https://ichp.vot.pl/index.php/p/article/view/1795