Experimental extraction of rough surface parameters from speckles in the deep Fresnel region with a scanning fibre-optic probeGuotao Liang, Xing Li, Meina Zhang, Zhenhua Li, Chunxiang Liu and Chuanfu ChengEur. Phys. J. D, 67 4 (2013) 77DOI: https://doi.org/10.1140/epjd/e2013-30498-6