Shan, Shu-Nan Synthesis of NaYF4:Yb3+, Er3+ upconversion nanoparticles in normal microemulsions. [electronic resource] - Nanoscale research letters Oct 2011 - 539 p. digital Publication Type: Journal Article ISSN: 1556-276X Standard No.: 10.1186/1556-276X-6-539 doi