A Simple Method of Determining Diffusion Coefficient by Digital Laser Speckle CorrelationGiuseppe Schirripa Spagnolo, Dario Ambrosini, Antonio Ponticiello and Domenica PaolettiJ. Phys. III France, 6 8 (1996) 1117-1125DOI: https://doi.org/10.1051/jp3:1996108