Jakovljević, Maja¸¸, Rahela Kulčar, Dario Tomašegović, Mojca Friškovec, & Marta Klanjšek Gunde. " Colorimetric description of thermochromic printing inks." Acta Graphica [Online], 28.1 (2017): 7-14. Web. 26 Dec. 2024