REFERENCES
- Barucci , V. , Froberg , R. ( 1997 ). One-dimensional almost gorenstein rings . J. Algebra 188 : 418 – 442 .
- Delgado , M. , García-Sánchez , P. A. , Morais , J. “numericalsgps”: A gap package on numerical semigroups . Available (http://www.gap-system.org/Packages/numericalsgps.html) .
- Nari , H. ( 2013 ). Symmetries on almost symmetric numerical semigroups . Semigroup Forum , 86 ( 1 ): 140 – 154 .
- Rosales , J. C. , García-Sánchez , P. A. ( 2009 ). Numerical semigroups . Developments in Mathematics . Vol. 20 . New York : Springer .
- Communicated by S. Goto.