M. Oftadeh and L. Tavakolizadeh, “Investigation of optoelectronic properties of N3 dye-sensitized TiO2 nano-crystals by hybrid methods: ONIOM (QM/MM) calculations”, Int. Nano Lett., vol. 3, no. 1 (December 2013), Apr. 2013, doi: 10.1186/2228-5326-3-26.