@article{AM2_1981__23_136894,
     author = {A. Pinkus},
     title = {Bernstein's comparison theorem and a problem of {Braess.}},
     journal = {Aequationes mathematicae},
     pages = {98--107},
     publisher = {mathdoc},
     volume = {23},
     year = {1981},
     zbl = {0533.41021},
     url = {http://geodesic.mathdoc.fr/item/AM2_1981__23_136894/}
}