Acknowledgement section of your articles:
"This research has made use of the  \texttt{PIONIER data reduction package} of the
Jean-Marie Mariotti Center\footnote{Available at http://www.jmmc.fr/pionier}."

Please cite the following article in the data reduction section:
http://cdsads.u-strasbg.fr/abs/2011A%26A...535A..67L