P. Filzmoser, R. Maronna and M. Werner (2008).
Outlier identification in high dimensions,
Computational Statistics & Data Analysis, Vol. 52 1694--1711.
Filzmoser P & Todorov V (2013).
Robust tools for the imperfect world,
Information Sciences 245, 4--20.
tools:::Rd_expr_doi("10.1016/j.ins.2012.10.017").