| consrq-package | Constrained Quantile Regression |
| int.crq | Lower and upper bound constrained quantile regression |
| int.mcrq | Lower and upper bound constrained quantile regression |
| mpcrq | Positive and unit sum constrained quantile regression |
| mprq | Positively constrained quantile regression |
| pcrq | Positive and unit sum constrained quantile regression |
| prq | Positively constrained quantile regression |