Prediction of physical properties of XO (X = Am, Cd, Mg, Zr) compounds using density functional theory Mohammad Masoud Mirhosseini and Reza Khordad Eur. Phys. J. Plus, 131 7 (2016) 239 Published online: 25 July 2016 DOI: 10.1140/epjp/i2016-16239-7