Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flowP.-P. Cortet, D. Bonamy, F. Daviaud, O. Dauchot, B. Dubrulle and M. RenoufEPL, 88 1 (2009) 14001DOI: https://doi.org/10.1209/0295-5075/88/14001