@article{10_4064_aa99_1_4,
     author = {Zhi-Wei Sun},
     title = {Restricted sums of subsets of $\Bbb Z$},
     journal = {Acta Arithmetica},
     pages = {41--60},
     publisher = {mathdoc},
     volume = {99},
     number = {1},
     year = {2001},
     doi = {10.4064/aa99-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa99-1-4/}
}