Tailoring Dy3+/Tb3+-doped lead telluride borate glasses for gamma-ray shielding applications M. I. Sayyed, Ashok Kumar, Abdullah M. S. Alhuthali, K. A. Mahmoud and Y. Al-Hadeethi Eur. Phys. J. Plus, 136 2 (2021) 211 Published online: 14 February 2021 DOI: 10.1140/epjp/s13360-021-01191-8