Citation
If you publish research that uses raxml-ng you have to cite it as follows:
Kozlov, A. M., Darriba, D., Flouri, T., Morel, B., & Stamatakis, A. (2019). RAxML-NG: a fast, scalable and user-friendly tool for maximum likelihood phylogenetic inference. Bioinformatics, 35(21), 4453-4455. https://doi.org/10.1093/bioinformatics/btz305