@article{curtin2020flexible,
  title={Flexible numerical optimization with ensmallen},
  author={Curtin, Ryan R. and Edel, Marcus and Prabhu, Rahul Ganesh and Basak,
Suryoday and Lou, Zhihao and Sanderson, Conrad},
  journal={arXiv preprint arXiv:2003.04103},
  year={2020}
}