@article{GDZPPN000363901, title = {Diameter-Extremal Subsets of Spheres.}, journal = {Discrete \& computational geometry}, volume = {4}, year = {1989}, pages = {117-138}, zbl = {0663.52008}, url = {http://dml.mathdoc.fr/item/GDZPPN000363901} }
Katz, M. Diameter-Extremal Subsets of Spheres.. Discrete & computational geometry, Tome 4 (1989) pp. 117-138. http://gdmltest.u-ga.fr/item/GDZPPN000363901/