Radić Seleš, Valentina, Irena Bates, doc.dr.sc., Ivana Plazonć, doc.dr.sc., Maja Rudolf, doc.dr.sc., & Katja Petric Maretić, doc.dr.sc.. " Determining the optical stability of printed laboratory substrates with wheat pulp after ageing treatment." Acta Graphica [Online], 30.1 (2019): 15 - 24. Web. 19 Apr. 2021