\begin{thebibliography}{5}
\providecommand{\natexlab}[1]{#1}
\providecommand{\url}[1]{\texttt{#1}}
\expandafter\ifx\csname urlstyle\endcsname\relax
  \providecommand{\doi}[1]{doi: #1}\else
  \providecommand{\doi}{doi: \begingroup \urlstyle{rm}\Url}\fi

\bibitem[Bolstad(2004)]{bolstadthesis2004}
B.~M. Bolstad.
\newblock \emph{Low Level Analysis of High-Density Oligonucleotide Data:
  Background, Normalization and Summarization}.
\newblock PhD thesis, University of California, Berkeley, 2004.

\bibitem[Bolstad et~al.(2003)Bolstad, Irizarry, Astrand, and
  Speed]{bolstad2003}
B.~M. Bolstad, R.~A. Irizarry, M.~Astrand, and T.~P. Speed.
\newblock {A comparison of normalization methods for high density
  oligonucleotide array data based on variance and bias}.
\newblock \emph{Bioinformatics}, 19\penalty0 (2):\penalty0 185--193, Jan 2003.

\bibitem[Huber(1981)]{Huber:1981}
P.~J. Huber.
\newblock \emph{Robust statistics}.
\newblock John Wiley \& Sons, Inc, New York, New York, 1981.

\bibitem[Irizarry et~al.(2003{\natexlab{a}})Irizarry, Bolstad, Collin, Cope,
  Hobbs, and Speed]{IrizarryA}
R.~A. Irizarry, B.~M. Bolstad, F.~Collin, L.~M. Cope, B.~Hobbs, and T.~P.
  Speed.
\newblock {Summaries of Affymetrix GeneChip probe level data}.
\newblock \emph{Nucleic Acids Res}, 31\penalty0 (4):\penalty0 e15, Feb
  2003{\natexlab{a}}.

\bibitem[Irizarry et~al.(2003{\natexlab{b}})Irizarry, Hobbs, Collin,
  Beazer-Barclay, Antonellis, Scherf, and Speed]{IrizarryB}
R.~A. Irizarry, B.~Hobbs, F.~Collin, Y.~D. Beazer-Barclay, K.~J. Antonellis,
  U.~Scherf, and T.~P. Speed.
\newblock {Exploration, normalization, and summaries of high density
  oligonucleot ide array probe level data}.
\newblock \emph{Biostat}, 4\penalty0 (2):\penalty0 249--264,
  2003{\natexlab{b}}.
\newblock URL
  \url{http://biostatistics.oupjournals.org/cgi/content/abstract/4/2/249}.

\end{thebibliography}
