A theoretical investigation of structural, mechanical, electronic and thermoelectric properties of orthorhombic CH3NH3PbI3Ibrahim Omer A. Ali, Daniel P. Joubert and Mohammed S.H. SuleimanEur. Phys. J. B, 91 10 (2018) 263DOI: https://doi.org/10.1140/epjb/e2018-90312-5