1. Subset sums;Alon;J. Number Theory,1987
2. On sums of subsets of a set of integers;Alon;Combinatorica,1988
3. On arithmetic progressions in sums of sets of integers;Bourgain,1990
4. Some problems and results on combinatorial number theory;Erdős,1989
5. On two additive problems;Erdős;J. Number Theory,1990