We exhibit here an infinite family of planar bipartite graphs which admit a \(k\)-graceful labeling for all \(k \geq 1\).
Citation
Sin-Min Lee, Sie-Keng Tan. A Class of Arbitrarily Graceful Planar Bipartite Graphs[J], Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 009. 119-127. DOI: .