Comment on ``Tests of scaling and universality of the distributions of   trade size and share volume: Evidence from three distinct markets" by Plerou   and Stanley, Phys. Rev. E 76, 046109 (2007)
  Comment on ``Tests of scaling and universality of the distributions of trade size and share volume: Evidence from three distinct markets" by Plerou and Stanley, Phys. Rev. E 76, 046109 (2007) 
\'Eva R\'acz, Zolt\'an Eisler, J\'anos Kert\'esz