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2. Construction of fully symmetric cubature formulae of degree 4k — 3 for fully symmetric planar regions;Cools,1985
3. Moderne algebraische Geometrie, Die idealtheoretischen Grundlagen;Gröbner,1949
4. Construction of cubature formulas of degree seven and nine for symmetric planar regions, using orthogonal polynomials;Haegemans;SIAM J. Numer. Anal.,1977
5. Polynomideale und Kubaturformeln;Möller,1973