1.
Du S-S, Cao H-Q, Sun Z-W. On a Sumset Problem for Integers. Electron. J. Combin. [Internet]. 2014Jan.24 [cited 2026May31];21(1):#P1.13. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i1p13