--- trunk/src/brains/Register.cpp	2012/08/22 02:28:28	1782
+++ trunk/src/brains/Register.cpp	2014/08/06 19:27:37	2011
@@ -35,7 +35,7 @@
  *                                                                      
  * [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).          
+ * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 234107 (2008).          
  * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010).
  * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
  */
@@ -53,6 +53,7 @@
 #include "integrators/NPTsz.hpp"
 #include "integrators/NPAT.hpp"
 #include "integrators/NPrT.hpp"
+#include "integrators/NPA.hpp"
 #include "integrators/NgammaT.hpp"
 #include "integrators/LangevinDynamics.hpp"
 #if defined(HAVE_QHULL)
@@ -80,6 +81,7 @@ namespace OpenMD {
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPTf>("NPTF"));
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPTxyz>("NPTXYZ"));
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPAT>("NPAT"));
+    IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPA>("NPA"));
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPrT>("NPRT"));
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NPrT>("NPGT"));
     IntegratorFactory::getInstance()->registerIntegrator(new IntegratorBuilder<NgammaT>("NGT"));