Rai S. Structural and Optical Studies of Ho\(^{3+}\)/yb\(^{3+}\) Co-Doped TiO\(^{2}\) Nanoparticles in Silica Glass. Jour. Atomic Mole. Conden. Nano Phys [Internet]. 2016 Jul. 30 [cited 2024 May 2];3(2):61-7. Available from: http://www.rgnpublications.com/journals/index.php/jamcnp/article/view/462