Tomaszewska, K., J. Kałużna-Czaplińska, and W. Jóźwiak. 2010. “Thermo-Catalytic Degradation of Low Density Polyethylene over Clinoptilolite - the Effect of Carbon Residue Deposition”. Polimery 55 (3):222-26. https://ichp.vot.pl/index.php/p/article/view/1005.