Szustakiewicz, K., M. Gazińska, A. Kiersnowski, and J. Pigłowski. 2011. “Polyamide 6 Organomontmorillonite Nanocomposites Based on Waste Materials”. Polimery 56 (5):397-400. https://ichp.vot.pl/index.php/p/article/view/931.