Index: mttroot/mtt/lib/cr/perl/Density.pm
==================================================================
--- mttroot/mtt/lib/cr/perl/Density.pm
+++ mttroot/mtt/lib/cr/perl/Density.pm
@@ -1,11 +1,11 @@
 #-------------------------------------------------------------------------------
 #			Model Transformation Tools
 #-------------------------------------------------------------------------------
 
 
-package Density;
+package mtt::Density;
 
 #-------------------------------------------------------------------------------
 #		linear constitutive relationship with cosine modulation
 #-------------------------------------------------------------------------------
 

Index: mttroot/mtt/lib/cr/perl/Poly.pm
==================================================================
--- mttroot/mtt/lib/cr/perl/Poly.pm
+++ mttroot/mtt/lib/cr/perl/Poly.pm
@@ -1,11 +1,11 @@
 #-------------------------------------------------------------------------------
 #			Model Transformation Tools
 #-------------------------------------------------------------------------------
 
 
-package Poly;
+package mtt::Poly;
 
 #-------------------------------------------------------------------------------
 #		Polytropic constitutive relationship 
 #-------------------------------------------------------------------------------
 

Index: mttroot/mtt/lib/cr/perl/lcos.pm
==================================================================
--- mttroot/mtt/lib/cr/perl/lcos.pm
+++ mttroot/mtt/lib/cr/perl/lcos.pm
@@ -1,11 +1,11 @@
 #-------------------------------------------------------------------------------
 #			Model Transformation Tools
 #-------------------------------------------------------------------------------
 
 
-package lcos;
+package mtt::lcos;
 
 #-------------------------------------------------------------------------------
 #		linear constitutive relationship with cosine modulation
 #-------------------------------------------------------------------------------
 

Index: mttroot/mtt/lib/cr/perl/lin.pm
==================================================================
--- mttroot/mtt/lib/cr/perl/lin.pm
+++ mttroot/mtt/lib/cr/perl/lin.pm
@@ -1,11 +1,11 @@
 #-------------------------------------------------------------------------------
 #			Model Transformation Tools
 #-------------------------------------------------------------------------------
 
 
-package lin;
+package mtt::lin;
 
 #-------------------------------------------------------------------------------
 #		Default linear constitutive relationship
 #-------------------------------------------------------------------------------
 

Index: mttroot/mtt/lib/cr/perl/lsin.pm
==================================================================
--- mttroot/mtt/lib/cr/perl/lsin.pm
+++ mttroot/mtt/lib/cr/perl/lsin.pm
@@ -1,11 +1,11 @@
 #-------------------------------------------------------------------------------
 #			Model Transformation Tools
 #-------------------------------------------------------------------------------
 
 
-package lsin;
+package mtt::lsin;
 
 #-------------------------------------------------------------------------------
 #		linear constitutive relationship with sine modulation
 #-------------------------------------------------------------------------------