%0 Journal Article %A A. V. Podobryaev %T Antipodal Points and Diameter of a Sphere %J Russian journal of nonlinear dynamics %D 2018 %P 579-581 %V 14 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2018_14_4_a9/ %G en %F ND_2018_14_4_a9