To cite CircNNTSR in publications use:
Fernandez-Duran JJ, Gregorio-Dominguez MM (2016). “CircNNTSR: An R Package for the Statistical Analysis of Circular, Multivariate Circular, and Spherical Data Using Nonnegative Trigonometric Sums.” Journal of Statistical Software, 70(6), 1–19. doi:10.18637/jss.v070.i06.
Corresponding BibTeX entry:
@Article{, title = {{CircNNTSR}: An {R} Package for the Statistical Analysis of Circular, Multivariate Circular, and Spherical Data Using Nonnegative Trigonometric Sums}, author = {Juan Jose Fernandez-Duran and Maria Mercedes Gregorio-Dominguez}, journal = {Journal of Statistical Software}, year = {2016}, volume = {70}, number = {6}, pages = {1--19}, doi = {10.18637/jss.v070.i06}, }