Polarized luminescence of anisotropic Eu3 + -centers in cubic crystals of ZrO2-Eu2O3 and CaF2 solid solutions Voron'ko, Yu. K. ; Zufarov, M. A. ; Sobol', A. A. ; Tsymbal, L. I. Abstract Publication: Optics and Spectroscopy Pub Date: November 1996 Bibcode: 1996OptSp..81..745V