@article{paperid:1061019, author = {Shekarriz, Mohammad Hadi and K. Mirzavaziri and Madjid Mirzavaziri, }, title = {A characterization for 2-self-centered graphs}, journal = {Discussiones Mathematicae Graph Theory}, year = {2018}, volume = {38}, number = {1}, month = {January}, issn = {1234-3099}, pages = {27--37}, numpages = {10}, keywords = {self-centered graphs; specialized bi-independent covering (SBIC); generalized complete bipartite graphs (GCB).}, }