@article{AM2_1983__26_136995,
     author = {B.D. Rakovich and P.M. Vasic},
     title = {Some extremal properties of orthogonal polynomials.},
     journal = {Aequationes mathematicae},
     pages = {125--137},
     publisher = {mathdoc},
     volume = {26},
     year = {1983},
     zbl = {0563.33009},
     url = {http://geodesic.mathdoc.fr/item/AM2_1983__26_136995/}
}