Puga, Ruben, Elius Palacios, Marielena Velasco, Jose Manuel Hernández, and Héctor Loro. “Synthesis of α-NaYF4: Er,Yb Particles by the Solvothermal Method for Fluorescence by Upconversion”. REVCIUNI 17, no. 1 (June 18, 2021): 39–41. Accessed May 18, 2024. https://www.revistas.uni.edu.pe/index.php/revciuni/article/view/955.