Ben Morris Alistair Sinclair Random Walks on Truncated Cubes and Sampling 0-1 Knapsack Solutions. 195-226 2004 34 SIAM J. Comput. 1 http://epubs.siam.org/sam-bin/dbq/article/41191 db/journals/siamcomp/siamcomp34.html#MorrisS04