swerling
........\fig1.m
........\Pd_swerling0.m
........\Pd_swerling1.m
........\Pd_swerling2.m
........\Pd_swerling3.m
........\Pd_swerling4.m
........\Pd_swerling41.m
........\Pd_swerling42.m
........\threshold.m