Liu Wei, Long Yao
      Finite groups with NR-subgroup
      International Mathematical Forum, Vol. 9, 2014, no. 13, 639-649
      http://dx.doi.org/10.12988/imf.2014.4233

Copyright © 2014 Liu Wei and Long Yao. 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.