This is a repository that stores the publically available code YNOGK for posterity. I do not claim any ownership of this code, do not maintain this code, and this repository is purely for archival purposes.
The original website that this code was hosted on is no longer available but can be found on the wayback machine at http://web.archive.org/web/20220211162431/http://www1.ynao.ac.cn/~yangxl/yxl.html.
The original YNOGK paper can be found at https://iopscience.iop.org/article/10.1088/0067-0049/207/1/6. Please cite said paper if you use this code in your own work, in accordance with the wishes of the original authors.