1. Radio antipodal colorings of cycles;Chartrand;Congr. Numer.,2000
2. Radio antipodal colorings of graphs;Chartrand;Math. Bohem.,2002
3. Radio labelings of graphs;Chartrand;Bull. Inst. Combin. Appl.,2001
4. Radio k-colorings of paths;Chartrand;Discuss. Math. Graph Theory,2004
5. Radio colorings of graphs—a survey;Chartrand;Int. J. Comput. Appl. Math.,2007