| CLX | Two-Sample Covariance Test by Cai, Liu and Xia (2013) |
| cm13 | One-Sample Covariance Test by Cai and Ma (2013) |
| cmtwo | Two-Sample Covariance Test by Cai and Ma (2013) |
| LC | Two-Sample Covariance Test by Li and Chen (2012) |
| PEC | Two-Sample Covariance Test by Yu, Li and Xue (2022) |
| PECO | Two-Sample Covariance Test by Yu, Li, Xue and Li(2022) |
| PEF | Two-Sample Covariance Test by Yu, Li and Xue (2022) |
| syk | One-Sample Covariance Test by Srivastava, Yanagihara, and Kubokawa (2014) |