O. Le, A. Pham, T. Nguyen, D. Hoang, T. Phan, and V. Tran, “Impacts of Ga doping on structural and thermoelectric properties of ZnO bulks sintered by solid-state reaction”, VNUHCM Journal of Science and Technology Development, vol. 25, no. 2, pp. 2432-2438, Aug. 2022.