Reference:
Harri Haanpää, Antti Huima, and Patric R. J. Östergård. Sets in with distinct sums of pairs. Discrete Applied Mathematics, 138:99–106, 2004.
Suggested BibTeX entry:
@article{hho04:setzn,
author = {Harri Haanp{\"a}{\"a} and Huima, Antti and {\"O}sterg{\aa}rd, Patric R. J.},
journal = {Discrete Applied Mathematics},
pages = {99106},
title = {Sets in $\mathbb{Z}_n$ with Distinct Sums of Pairs},
volume = {138},
year = {2004},
}
