@article {ferretti1999class,
	title = {A class of locally and globally robust regression estimates},
	journal = {Journal of the American Statistical Association},
	volume = {94},
	number = {445},
	year = {1999},
	pages = {174{\textendash}188},
	publisher = {Taylor \& Francis},
	author = {Ferretti, Nelida and Kelmansky, Diana and Yohai, V{\'\i}ctor J and Zamar, Ruben H}
}
