G. Sethuraman, K. Sankar
      Subdivision of wheel is graceful and cordial
      International Journal of Mathematical Analysis, Vol. 9, 2015, no. 17, 817-822
      http://dx.doi.org/10.12988/ijma.2015.5375

Copyright © 2014 G. Sethuraman and K. Sankar. 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.