@article {maronna1993bias, title = {Bias-robust regression estimation: A partial survey}, journal = {New Directions in Statistical Data Analysis and Robustness, eds. S. Morgenthaler, E. Ronchetti and WA Stahel, Birkh auser, Basel}, year = {1993}, pages = {157{\textendash}176}, author = {Maronna, Ricardo A and Yohai, V{\'\i}ctor J and Zamar, Ruben J} }