@article{ETNA_2006__25__a23,
     author = {Gautschi, Walter},
     title = {The circle theorem and related theorems for {Gauss-type} quadrature rules},
     journal = {Electronic transactions on numerical analysis},
     pages = {129--137},
     publisher = {mathdoc},
     volume = {25},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2006__25__a23/}
}