Hastie T, Stuetzle W (1989). “Principal Curves.” Journal of the American Statistical Association, 84(406), 502-516. doi:10.2307/2289936, https://web.stanford.edu/~hastie/Papers/principalcurves.pdf, https://www.jstor.org/stable/2289936.
Cannoodt R (2018). “princurve 2.0: Fit a Principal Curve in Arbitrary Dimension.” doi:10.5281/zenodo.3351282, https://github.com/rcannood/princurve.
Corresponding BibTeX entries:
@Article{, author = {Trevor Hastie and Werner Stuetzle}, title = {Principal Curves}, journal = {Journal of the American Statistical Association}, year = {1989}, month = {June}, volume = {84}, number = {406}, pages = {502-516}, doi = {10.2307/2289936}, url = {https://www.jstor.org/stable/2289936}, note = {\url{https://web.stanford.edu/~hastie/Papers/principalcurves.pdf}}, }
@Misc{, author = {Robrecht Cannoodt}, title = {princurve 2.0: Fit a Principal Curve in Arbitrary Dimension}, journal = {CRAN}, year = {2018}, month = {June}, doi = {10.5281/zenodo.3351282}, url = {https://github.com/rcannood/princurve}, }