OwenQ1                  First Owen Q-function
OwenQ2                  Second Owen Q-function
OwenT                   Owen T-function
powen                   Owen distribution functions when
                        delta_1>delta_2
psbt                    Owen distribution functions
ptOwen                  Student CDF with integer number of degrees of
                        freedom
spowen2                 Special case of second Owen distribution
                        function
