@article{NUMA_1970__16_132029,
     author = {F.N. FRITSCH},
     title = {On the {Number} of {Nodes} in {Self-Contained} {Integration} {Formulas} of {Degree} {Two} for {Compact} {Planar} {Regions.}},
     journal = {Numerische Mathematik},
     pages = {224--230},
     publisher = {mathdoc},
     volume = {16},
     year = {1970},
     zbl = {0194.18702},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__16_132029/}
}