Dapeng Yu, G. T. (2015) “First principle study optical properties of CH3NH3PbI3 and CH3NH3SnI3 for perovskite photovoltaics”, Asian Journal of Current Engineering and Maths, 4(5), pp. 49–55. doi: 10.15520/ajcem.2015.vol4.iss5.37.pp49-55.