Slowly moving matter-wave gap soliton propagation in weak random optical latticesM. R. Zhang, X. Y. Jiang, Y. L. Zhang, L. Shi, J. Zi and J. Y. ZhouEur. Phys. J. B, 58 3 (2007) 269-278DOI: https://doi.org/10.1140/epjb/e2007-00230-4