hbe                     Hall-Buckley-Eagleson method
lpb4                    Lindsay-Pilla-Basak method
momentchi2              momentchi2: A package containing a collection
                        of moment-matching methods for computing the
                        cdf of a weighted sum of chi-squared random
                        variables
sw                      Satterthwaite-Welch method
wf                      Wood's F method
