demo_spsurml        # Demo of spsurml() function
demo_spsur3sls      # Demo of spsur3sls() function
demo_spsurtime      # Demo of spsurtime() function
demo_impactspsur    # Demo of impactspsur() function
demo_lmtestspsur    # Demo of lmtestspsur() function
demo_lr_betas       # Demo of lr_betas() function
demo_wald_betas     # Demo of wald_betas() function
demo_wald_deltas    # Demo of wald_deltas() function
demo_methods_spsur  # Demo of spsur methods
demo_dgp_spsur      # Demo of dgp_spsur() function
