The following publications are possibly variants of this publication:
- The integral sum number of complete bipartite graphs ::::K::::::r, s::Wenjie He, Yufa Shen, Lixin Wang, Yanxun Chang, Qingde Kang, Xinkai Yu. DM, 239(1-3):137-146, 2001. [doi]
- The Mod Sum Number of Even Fans and Symmetric Complete Bipartite GraphsWenwen Wang, Ming Zhang, Hongquan Yu, Duanyin Shi. arscom, 94, 2010.