Authors: Wyss, CP Kehrli, M Huber, T Morris, PJ Luthy, W Weber, HP Zagumennyi, AI Zavartsev, YD Studenikin, PA Shcherbakov, IA Zerrouk, AF

Citation: Cp. Wyss et al., Excitation of the thulium (1)G(4) level in various crystal hosts, J LUMINESC, 82(2), 1999, pp. 137-144