On the Sparse Set Conjecture for Sets with Low Denisty.

Harry Buhrman Montserrat Hermo On the Sparse Set Conjecture for Sets with Low Denisty. 609-618 1995 STACS db/conf/stacs/stacs95.html#BuhrmanH95 http://dx.doi.org/10.1007/3-540-59042-0_109