Previous Article Next Article Table of Contents Powder Technology, Vol.301, 886-888, 2016 DOI10.1016/j.powtec.2016.07.024 Export Citation Comment on the paper "Apparatus for measuring friction inside granular materials - Granular friction analyzer", Marko Bek et al., Powder Technol. 288 (2016) 255-265 [1] Schulze D Keywords:Janssen;Stress ratio;Wall friction;Flowability;Uniaxial compression Please enable JavaScript to view the comments powered by Disqus.