Prajzler V, Jeřábek V, Lyutakov O, Hüttel I, Špirková J, Machovič V, Oswald J, Chvostová D, Zavadil J. Optical Properties of Erbium and Erbium/Ytterbium Doped Polymethylmethacrylate. Acta Polytech [Internet]. 2008 Jan. 5 [cited 2024 May 6];48(5). Available from: https://ojs.cvut.cz/ojs/index.php/ap/article/view/1047