calc_E_fgm              Region Integral E_theta(g_x,t,D) for
                        FGM-Dependent Model
calc_E_ind              Region Integral E_theta(g_x,t,D) for
                        Independent Model
calc_alpha_fgm          Calculate Observation Probability for
                        FGM-Dependent Double Truncation
calc_alpha_ind          Calculate Observation Probability for
                        Independent Double Truncation
calc_critical_values    Calculate Asymptotic Critical Values and
                        P-Value
calc_ks_stat            Compute 2D Kolmogorov-Smirnov Test Statistic
                        for Truncated Data
enterprise_data         Synthetic Enterprise Lifespans under Double
                        Truncation
fit_double_trunc        Fit Double-Truncated Exponential Duration Model
ks_dep_trunc            Kolmogorov-Smirnov-type Test for Dependently
                        Double-Truncated Data
plot.ks_dep_trunc       Plot S3 Method for ks_dep_trunc
print.ks_dep_trunc      Print S3 Method for ks_dep_trunc
sim_double_trunc        Simulate Double-Truncated Duration Data
summary.ks_dep_trunc    Summary S3 Method for ks_dep_trunc
