Peter Dankelmann, Henda C. Swart, Paul van den Berg. The number of edges in a bipartite graph of given radius. Discrete Mathematics, 311(8-9):690-698, 2011. [doi]
@article{DankelmannSB11, title = {The number of edges in a bipartite graph of given radius}, author = {Peter Dankelmann and Henda C. Swart and Paul van den Berg}, year = {2011}, doi = {10.1016/j.disc.2011.01.015}, url = {http://dx.doi.org/10.1016/j.disc.2011.01.015}, tags = {graph-rewriting, C++, rewriting}, researchr = {https://researchr.org/publication/DankelmannSB11}, cites = {0}, citedby = {0}, journal = {Discrete Mathematics}, volume = {311}, number = {8-9}, pages = {690-698}, }