R. M. S. Mahmood
      On subgroups of quasi-graph groups
      International Mathematical Forum, Vol. 9, 2014, no. 10, 457-465
      http://dx.doi.org/10.12988/imf.2014.39175

Copyright © 2014 R. M. S. Mahmood. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.