Index: /trunk/doc/release.2015/ps1.datasystem/datasystem.tex
===================================================================
--- /trunk/doc/release.2015/ps1.datasystem/datasystem.tex	(revision 40028)
+++ /trunk/doc/release.2015/ps1.datasystem/datasystem.tex	(revision 40029)
@@ -1601,5 +1601,5 @@
 astrometric and photometric calibrations can be calculated.  The
 details of the calibration analysis are discussed in
-\cite{Magnier2017c}.  We present a brief summary here.
+\cite{magnier2017c}.  We present a brief summary here.
 
 Astrometric calibration consists of measuring and correcting
@@ -1614,5 +1614,5 @@
 a function of position in the camera (essentially an astrometric
 flat-field correction), as a function of the brightness of the star
-(the so-called Koppenh\"offer effect, see~\ref{Magnier2017c}), and as
+(the so-called Koppenh\"offer effect, see~\ref{magnier2017c}), and as
 a function of airmass and color (Differential chromatic refraction).
 Once the systematic errors have been measured, they are applied back