Jagosich, Fábio Henrique, Luiz Vicente Gomes Tarelho, Laércio Gomes, and Izilda Márcia Ranieri. 2008. “Investigation of the up-Conversion Processes in Er3+:LiYF4 Crystals 12”. Exacta 4 (1):129-34. https://doi.org/10.5585/exacta.v4i1.662.