@article{NUMA_1975__25_132368,
     author = {A. Haegemanns and R. Piessens},
     title = {Construction of {Cubature} {Formulas} of {Degree} {Eleven} for {Symmetric} {Planar} {Regions} },
     journal = {Numerische Mathematik},
     pages = {139--148},
     publisher = {mathdoc},
     volume = {25},
     year = {1975},
     zbl = {0319.65020},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1975__25_132368/}
}