See Marazzi A. (1993), p.398 and p.406
dfrpar(x, etype, upar = -1, psipar = -1)
See reference
See reference
See reference
See reference
See reference
Marazzi A. (1993) Algorithm, Routines, and S functions for Robust Statistics. Wadsworth & Brooks/cole, Pacific Grove, California. p.398 and p.406