Merzah, A.S. and Ibrahim, A.S. 2015. Preparation and Characterization of Y2O3, Sio2 Doped By Eu2O3 as Luminescent Ink. Iraqi Journal of Chemical and Petroleum Engineering. 16, 2 (Jun. 2015), 45–52. DOI:https://doi.org/10.31699/IJCPE.2015.2.6.