Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Taku Saiki and Masahiro Nakatsuka and Kazuo Imasaki,Highly efficient lasing action of Nd[3+]- and Cr[3+]-doped yttrium aluminum garnet ceramics based on phonon-assisted cross-relaxation using solar light source,Japanese journal of applied physics : JJAP,00214922,Tokyo : The Japan Society of Applied Physics,2010-08,49,8,082702,https://cir.nii.ac.jp/crid/1520853832578991616,https://doi.org/10.1143/jjap.49.082702