Hoàng Văn, D., Phạm, A., Lê, T., Nguyễn, T., Phan, T. and Trần, V. 2021. Investigating the existence of oxygen interstitial in CuCr1􀀀xMgxO2 [0.00 X 0.30] thermoelectric materials by X-Ray photoelectron spectroscopy [XPS]. Science & Technology Development Journal: Natural Sciences. 5, 2 (Apr. 2021), 1125-1134. DOI:https://doi.org/https://doi.org/10.32508/stdjns.v5i2.973.