1. Gröbner bases of ideals of minors of a symmetric matrix;Conca;J. Algebra,1994
2. Sagbi bases with applications to blow up algebras;Conca;J. Reine Angew. Math.,1996
3. A characteristic free approach to invariant theory;De Concini;Adv. Math.,1976
4. Poincaré series of semi-invariants of 2×2 matrices;Domokos;Lin. Algebra Appl.,2000
5. V. Drensky, Defining relations for the algebra of invariants of 2×2 matrices, Algebra Represent. Theory, to appear.