Heller, René Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;
https://ui.adsabs.harvard.edu/abs/2019arXiv190600966H/abstract (Abstract)
Hippke, M., David, T. J., Mulders, G. D., & Heller, R. (2019). Wōtan: Comprehensive Time-series Detrending in Python. The Astronomical Journal, 158(4): 143. doi:10.3847/1538-3881/ab3984.