@article{ETNA_1995__3__a9,
     author = {Van Barel,  M. and Bultheel,  A.},
     title = {Orthonormal polynomial vectors and least squares approximation for a discrete inner product},
     journal = {Electronic transactions on numerical analysis},
     pages = {1--23},
     year = {1995},
     volume = {3},
     zbl = {0857.42013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_1995__3__a9/}
}