| coef.gplm | Grouped Panel Data Model | 
| coef.pagfl | Pairwise Adaptive Group Fused Lasso | 
| coef.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| coef.tv_gplm | Grouped Time-varying Panel Data Model | 
| df.residual.gplm | Grouped Panel Data Model | 
| df.residual.pagfl | Pairwise Adaptive Group Fused Lasso | 
| df.residual.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| df.residual.tv_gplm | Grouped Time-varying Panel Data Model | 
| fitted.gplm | Grouped Panel Data Model | 
| fitted.pagfl | Pairwise Adaptive Group Fused Lasso | 
| fitted.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| fitted.tv_gplm | Grouped Time-varying Panel Data Model | 
| formula.gplm | Grouped Panel Data Model | 
| formula.pagfl | Pairwise Adaptive Group Fused Lasso | 
| formula.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| formula.tv_gplm | Grouped Time-varying Panel Data Model | 
| grouped_plm | Grouped Panel Data Model | 
| grouped_tv_plm | Grouped Time-varying Panel Data Model | 
| PAGFL | Pairwise Adaptive Group Fused Lasso | 
| pagfl | Pairwise Adaptive Group Fused Lasso | 
| print.gplm | Grouped Panel Data Model | 
| print.pagfl | Pairwise Adaptive Group Fused Lasso | 
| print.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| print.tv_gplm | Grouped Time-varying Panel Data Model | 
| residuals.gplm | Grouped Panel Data Model | 
| residuals.pagfl | Pairwise Adaptive Group Fused Lasso | 
| residuals.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| residuals.tv_gplm | Grouped Time-varying Panel Data Model | 
| sim_DGP | Simulate a Panel With a Group Structure in the Slope Coefficients | 
| sim_tv_DGP | Simulate a Time-varying Panel With a Group Structure in the Slope Coefficients | 
| summary.gplm | Grouped Panel Data Model | 
| summary.pagfl | Pairwise Adaptive Group Fused Lasso | 
| summary.tvpagfl | Time-varying Pairwise Adaptive Group Fused Lasso | 
| summary.tv_gplm | Grouped Time-varying Panel Data Model | 
| tv_pagfl | Time-varying Pairwise Adaptive Group Fused Lasso |