@article{AM2_1979__19_136821,
     author = {M. Becker},
     title = {An elementary proof of the inverse theorem for {Bernstein} polynomials.},
     journal = {Aequationes mathematicae},
     pages = {145--150},
     publisher = {mathdoc},
     volume = {19},
     year = {1979},
     zbl = {0444.41007},
     url = {http://geodesic.mathdoc.fr/item/AM2_1979__19_136821/}
}