Han Hyuk Cho, Suh-Ryung Kim, Yunsun Nam. On The Trees Whose 2-Step Competition Numbers Are Two. Ars Comb., 77, 2005.
@article{ChoKN05, title = {On The Trees Whose 2-Step Competition Numbers Are Two}, author = {Han Hyuk Cho and Suh-Ryung Kim and Yunsun Nam}, year = {2005}, researchr = {https://researchr.org/publication/ChoKN05}, cites = {0}, citedby = {0}, journal = {Ars Comb.}, volume = {77}, }