Publications
On Cohen-Macaulay subsemigroups of $\bold N^2$. Comm. Algebra. 1998;26:2543-2558.Edit
Nonnegative elements of subgroups of $\bf Z^n$. Linear Algebra Appl.. 1998;270:351-357.Edit
On numerical semigroups with high embedding dimension. J. Algebra. 1998;203:567-578.Edit
On complete intersection affine semigroups. Comm. Algebra. 1995;23:5395-5412.Edit