Rehakova, M., Mikula, M., Ceppan, M., & Malec, B. (2003). The Aging Process and Evaluation of Stability of Graphic Pictures. Chemické Listy, 97(3). Získáno z http://ww.w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2242