diff --git a/VOTable.tex b/VOTable.tex
index 75d8ef1..f181737 100644
--- a/VOTable.tex
+++ b/VOTable.tex
@@ -1093,11 +1093,12 @@ \subsection{Summary of Attributes}
 \item	The \attr{xtype} attribute, added in VOTable 1.2, specifies an
 	{\em extended} (or {\em external}) datatype. It is meant
 	to give details about the column contents beyond the
-	primitive \attr{datatype}, like timestamps.
+	primitive \attr{datatype}, like timestamps
+        (see \Aref{sec:xtype}).
 
 \item   The \attr{unit} attribute specifies the units in which
         the values of the corresponding column are expressed
-        (see \Aref{sec:unit})
+        (see \Aref{sec:unit}).
 
 \item   The \attr{ucd} attribute supplies a standardized classification
         of the physical quantity expressed in the column