A note on quasi-Gorenstein rings
  In this paper, after giving a criterion for a Noetherian local ring to be quasi-Gorenstein, we obtain some sufficient conditions for a quasi- Gorenstein ring to be Gorenstein. In the course, we provide a slight generalization of a theorem of Evans and Griffith. 
S. H. Hassanzadeh, N. Shirmohammadi, and H. Zakeri