Some notes about affine diameters of convex figures. - Valeriu Soltan; Mahn Hung Nguyên (Comb., 1990)

Lower Bounds for the Numbers of Antipodal Pairs and Strictly Antipodal Pairs of Vertices in a Convex Polytope. - Mahn Hung Nguyên; Valeriu Soltan (Discret. Comput. Geom., 1994)