Excited-state dynamics of the Tm3+ ions and Tm3+ → Ho3+ energy transfers in LiYF4 A. Brenier, J. Rubin, R. Moncorge et C. Pedrini J. Phys. France, 50 12 (1989) 1463-1482 DOI: 10.1051/jphys:0198900500120146300