Kelar, K., B. Jurkowski, and K. Mencel. 2022. “Montmorillonite Separated from Bentonite - Its Modification and Possibility to Use in Anionic Polymerization of E-Caprolactam for Preparation of Nanocomposites”. Polimery 50 (6):449-54. https://ichp.vot.pl/index.php/p/article/view/1652.