Coherent potential approximation study of the Mott transition in optical lattice system with site-dependent interactionsDuc-Anh Le, Thi-Thu-Trang Tran and Anh-Tuan HoangEur. Phys. J. B, 86 12 (2013) 503DOI: https://doi.org/10.1140/epjb/e2013-40896-1