Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nakagawa Masuo and Ozawa Kunio,Zero-Phonon Lines and Phonon Coupling in Neutron Irradiated MgO Crystals,Journal of the Physical Society of Japan,00319015,THE PHYSICAL SOCIETY OF JAPAN,1968,24,1,96-102,https://cir.nii.ac.jp/crid/1390001204193574528,https://doi.org/10.1143/jpsj.24.96