1. E. Baladze: Complete solution of the Szökefalvi-Nagy problem for zonotopes. Soviet Math. Dokl. 34 (1987), no. 3, 458–461.
2. E. Baladze: A solution of the Szökefalvi-Nagy problem for zonoids (Russian). Doklady AN SSSR, 310 (1990), no. 1, 11–14.
3. E. Baladze: Solution of the Szökefalvi-Nagy problem for a class of convex polytopes. Geom. Dedicata 49 (1994), 25–38.
4. E. Baladze and V. Boltyanski: Belt bodies and the Helly dimension (Russian). Mat. Sbornik (to appear).
5. E.D. Bolker: A class of convex bodies. Trans. Amer. Math. Soc. 145 (1969), 323–345.