--- branches/development/src/math/CubicSpline.cpp	2011/09/12 17:09:26	1618
+++ branches/development/src/math/CubicSpline.cpp	2012/07/06 22:01:58	1767
@@ -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).
  */
  
 #include "math/CubicSpline.hpp"
@@ -67,7 +68,7 @@ void CubicSpline::addPoints(const vector<RealType>& xp
     simError();    
   }
 
-  for (int i = 0; i < xps.size(); i++) 
+  for (unsigned int i = 0; i < xps.size(); i++) 
     data_.push_back(make_pair(xps[i], yps[i]));
 }