TY - RPRT TI - Lanthanide-doped upconversion nanoparticles AU - Bettinelli, Marco AU - Carlos, Luís AU - Liu, Xiaogang PY - 2015 DO - 10.1063/pt.3.2913 UR - https://www.osti.gov/biblio/22482536 ID - 22482536 ER -