Theoretical investigation on the EPR parameters for VO2+ doped ZnO–CdS nanocompositesQuan-Shui Zhu, Ya-Dong Li, Bao-Jin Chen and Hua-Ming ZhangEur. Phys. J. D, 74 1 (2020) 4DOI: https://doi.org/10.1140/epjd/e2019-100312-4