Dae Won Yoon
      On the Gauss map of tubular surfaces in Galilean 3-space
      International Journal of Mathematical Analysis, Vol. 8, 2014, no. 45, 2229-2238
      http://dx.doi.org/10.12988/ijma.2014.4365

Copyright © 2014 Dae Won Yoon. 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.