Ventura, K., Adam, M., & Válková, P. (2001). Extraction of Oil from Samples of Crystalline Polystyrene by Accelerated Solvent Extraction. Chemické Listy, 95(4), 223–226. Získáno z http://ww.w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2428