Nahid, Farzana, and Md. Rashedur Rahman. “THERMAL EXCITATION ENERGY OF TRAPPED ELECTRONS AT LOW TEMPERATURE STUDIED THROUGH POSITRON ANNIHILATION LIFETIME SPECTROSCOPY”. Khulna University Studies (November 29, 2013): 157–165. Accessed June 4, 2026. https://kus.ku.ac.bd/kustudies/article/view/382.