%0 Journal Article %A Joswig, Michael %T From Kepler to Hales, and back to Hilbert %J Documenta mathematica %D 2012 %P 439-446 %V Optimization Stories %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2012__S3__a2/ %G en %F DOCMA_2012__S3__a2