On the paper "On Green's relations, $2^0$-regularity and Quasi-ideals in   $\Gamma$-semigroups"
  This is about the paper in the title published by K. Hila and J. Dine in Acta Math. Sinica, English Series, 29, no. 3, (2013), 609--624. 
Niovi Kehayopulu
math.RA