Department of Mathematics, Taiyuan Normal University, Taiyuan, China
Department of Mathematics, Yili Normal University, Yili, China
Department of Mathematical Sciences, University of Puerto Rico, Mayaguez, USA
Copyright © 2014 Chuanlong Wang, Mudaster Sidik, Xuerong Yong et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.
How to Cite this Article
C. Wang, M. Sidik and X. Yong, "The Number of Digraphs with Cycles of Length
k,"
Open Journal of Discrete Mathematics, Vol. 4 No. 1, 2014, pp. 6-8. doi:
10.4236/ojdm.2014.41002.