@article{Haegemans1977, author = {Haegemans, Ann and Piessens, Robert}, title = {Construction of Cubature Formulas of Degree Seven and Nine Symmetric Planar Regions, Using Orthogonal Polynomials}, journal = {SIAM Journal on Numerical Analysis}, volume = {14}, number = {3}, pages = {492-508}, year = {1977}, doi = {10.1137/0714029}, URL = { https://doi.org/10.1137/0714029 }, eprint = { https://doi.org/10.1137/0714029 } }