Keller, CSmorodinsky, STardos, G2018-11-082018-11-082018-11-08201810.1007/s11856-018-1685-1https://infoscience.epfl.ch/handle/20.500.14299/150419WOS:000433044000015Improved bounds on the Hadwiger-Debrunner numberstext::journal::journal article::research article