Gao W, Li Y, Peng J, Sun F. Subsums of a Zero-sum Free Subset of an Abelian Group. Electron. J. Combin. [Internet]. 2008Sep.15 [cited 2026Apr.1];15(1):R116. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v15i1r116