I find CausalML is published with 2 pages in 2020.
@article{chen2020causalml,
title={Causalml: Python package for causal machine learning},
author={Chen, Huigang and Harinen, Totte and Lee, Jeong-Yoon and Yung, Mike and Zhao, Zhenyu},
journal={arXiv preprint arXiv:2002.11631},
year={2020}
}
I find CausalML is published with 2 pages in 2020.