1. Collaborative multi-robot exploration;Burgard,2000
2. Exploring an unknown graph efficiently;Fleischer,2005
3. Graceful graphs: some further results and problems;Koh;Congr. Numer.,1980
4. Graceful unicyclic graphs;Truszczynski;Demonstr. Math.,1984
5. On super edge-magic graphs;Kim;Ars Comb.,2006