Ouyang, Juan Recent Advances of NaLuF4-Based Upconversion Nanocrystals. [electronic resource] - Journal of nanoscience and nanotechnology Jan 2015 - 31-40 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1533-4899 Standard No.: 10.1166/jnn.2015.9540 doi