--- branches/development/src/selection/SelectionToken.hpp	2011/09/14 21:15:17	1629
+++ branches/development/src/selection/SelectionToken.hpp	2012/10/03 14:20:07	1803
@@ -36,7 +36,8 @@
  * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).             
  * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
  * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
- * [4]  Vardeman & Gezelter, in progress (2009).                        
+ * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010).
+ * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
  */
 
 #ifndef SELECTION_TOKEN_HPP
@@ -141,6 +142,7 @@ namespace OpenMD {
     const static int none         = expression | 10;
     const static int name         = expression | 11;
     const static int hull         = expression | dynamic | 12;
+
     // miguel 2005 01 01
     // these are used to demark the beginning and end of expressions
     // they do not exist in the source code, but are emitted by the