--- branches/development/src/brains/SimInfo.cpp	2011/08/04 20:04:35	1601
+++ branches/development/src/brains/SimInfo.cpp	2011/11/22 20:38:56	1665
@@ -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).
  */
  
 /**
@@ -60,6 +61,9 @@
 #include "io/ForceFieldOptions.hpp"
 #include "UseTheForce/ForceField.hpp"
 #include "nonbonded/SwitchingFunction.hpp"
+#ifdef IS_MPI
+#include <mpi.h>
+#endif
 
 using namespace std;
 namespace OpenMD {