Ruben A. Cerutti, Luciano L. Luque
      k-Fractional trigonometric functions
      International Journal of Contemporary Mathematical Sciences, Vol. 9, 2014, no. 12, 569-578
      http://dx.doi.org/10.12988/ijcms.2014.4885

Copyright © 2014 Ruben A. Cerutti and Luciano L. Luque. 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.