Ab initio prediction of the structural, electronic, elastic and thermodynamic properties of the tetragonal ternary intermetallics XCu2Si2 (X = Ca, Sr)Mounir Reffas, Abdelmadjid Bouhemadou, Khelifa Haddadi, Saad Bin-Omran and Layachi LouailEur. Phys. J. B, 87 12 (2014) 283DOI: https://doi.org/10.1140/epjb/e2014-50526-1