@article{SDPP_1977-1978__19_1_A4_0,
     author = {Stewart, Cam L.},
     title = {On difference sets of sets of integers},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     note = {talk:5},
     pages = {1--8},
     publisher = {Secr\'etariat math\'ematique},
     volume = {19},
     number = {1},
     year = {1977-1978},
     mrnumber = {520302},
     zbl = {0392.10051},
     language = {en},
     url = {http://www.numdam.org/item/SDPP_1977-1978__19_1_A4_0/}
}