@article{MZ_1975__145_172267,
     author = {E.W. Cheney and Theodore J. Rivlin},
     title = {Some {Polynomial} {Approximation} {Operators.}},
     journal = {Mathematische Zeitschrift},
     pages = {33--42},
     publisher = {mathdoc},
     volume = {145},
     year = {1975},
     zbl = {0295.41003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__145_172267/}
}