@article{
    hho04:setzn,
    author = {Haanp{\"a}{\"a}, Harri and Huima, Antti and {\"O}sterg{\aa}rd, Patric R. J.},
    title = "Sets in $\mathbb{Z}_n$ with Distinct Sums of Pairs",
    url = "http://lib.hut.fi/Diss/2004/isbn9512269422/",
    journal = "Discrete Applied Mathematics",
    volume = "138",
    year = "2004",
    pdf = "hho04setzn.pdf",
    annote = "int journal ref",
    pages = "99-106"
}