LAM, Thi Kieu Giang et al. Synthesis, characterization and up-conversion luminescence properties of alpha-NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 59, n. 3, p. 79-84, sep. 2017. ISSN 2525-2461. Available at: <http://vietnamscience.vn/index.php/VJSTE/article/view/74>. Date accessed: 21 oct. 2019.