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@@ -106,9 +106,9 @@ displacement image (encoding, at brain/non-brain edge points, the
 outwards or inwards edge change between the two timepoints) was
 dilated, transformed into MNI152 space, and masked by a standard
 MNI152-space brain edge image. In this way the edge displacement
-values were warped onto the standard brain edge. Next, the resulting
-images from all subjects were fed into voxelwise statistical analysis
-to test for.....
+values were warped onto the standard brain edge [Bartsch 2004]. Next,
+the resulting images from all subjects were fed into voxelwise
+statistical analysis to test for.....
 
 <font size=-1><em>
 <P>[Smith 2001] S.M. Smith, N.&nbsp;De&nbsp;Stefano, M.&nbsp;Jenkinson, and P.M. Matthews.