TY - JOUR AU - A. Pinkus TI - Bernstein's comparison theorem and a problem of Braess. (Short Communication). JO - Aequationes mathematicae PY - 1981 SP - 318 EP - 320 VL - 22 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AM2_1981__22_136885/ ID - AM2_1981__22_136885 ER -