diff --git a/DESCRIPTION b/DESCRIPTION
index d7b1214..066f30d 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,12 +1,12 @@
 Package: StatMatch
 Type: Package
 Title: Statistical Matching
-Version: 1.0.3
-Date: 2011-10-06
+Version: 1.0.4
+Date: 2012-03-20
 Author: Marcello D'Orazio
 Maintainer: Marcello D'Orazio <madorazi@istat.it>
 Depends: R (>= 2.7.0), proxy, lpSolve, survey
-Suggests: optmatch, SDaA, simPopulation
+Suggests: optmatch, SDaA, simPopulation, MASS
 Description: The package StatMatch provides some R functions to perform
         statistical matching, i.e. the integration of two data sources
         referred to the same target population which share a number of
@@ -15,6 +15,6 @@ Description: The package StatMatch provides some R functions to perform
         methods. Methods to perform statistical matching when dealing
         with data from complex sample surveys are available too.
 License: EUPL
-Packaged: 2011-10-20 12:01:04 UTC; madorazi
+Packaged: 2012-03-20 16:52:25 UTC; madorazi
 Repository: CRAN
-Date/Publication: 2011-10-20 15:18:21
+Date/Publication: 2012-03-21 12:52:48
diff --git a/MD5 b/MD5
index f0b26d6..e9722fe 100644
--- a/MD5
+++ b/MD5
@@ -1,4 +1,5 @@
-0d7963e69e283f0044a5d49ce95ebb71 *DESCRIPTION
+6d6c42ad1fa28f81850a137773b6d5d4 *DESCRIPTION
+360b947eab2890c7bd056fdba889343c *NAMESPACE
 346b895e89eede92acd97348b9d80368 *NEWS
 ccbf147c1cc35c89d7a9e777fdb730ef *R/Fbwidths.by.x.R
 bdd46f0f303288491179c3a55ce47700 *R/Frechet.bounds.cat.R
@@ -14,7 +15,7 @@ d4ce77bd485a469b4ee91d086bd0b683 *R/mahalanobis.dist.R
 ad86ce85092398aa04cce1835140d4c9 *R/mixed.mtc.R
 fb7632ad5c9b9ed2ce3ffed62d10d2b2 *R/rankNND_hotdeck.R
 8df137063461c0a13d67c3e3cebb29f6 *inst/doc/Statistical_Matching_with_StatMatch.Rnw
-46549231f569cbd75a6c9f4357cb9198 *inst/doc/Statistical_Matching_with_StatMatch.pdf
+921127eb9bf10dcaa1230be5e3bb89b7 *inst/doc/Statistical_Matching_with_StatMatch.pdf
 afd54295cfd6983e09a5ac92025d070a *man/Fbwidths.by.x.Rd
 675351edeb3e7f711bbe5765d9cb2c5e *man/Frechet.bounds.cat.Rd
 fad584905a91b8ea0e6f2b169fb2d838 *man/NND.hotdeck.Rd
diff --git a/NAMESPACE b/NAMESPACE
new file mode 100755
index 0000000..cc2d41e
--- /dev/null
+++ b/NAMESPACE
@@ -0,0 +1,12 @@
+# Default NAMESPACE created by R
+# Remove the previous line if you edit this file
+
+# Export all names
+exportPattern(".")
+
+# Import all packages listed as Imports or Depends
+import(
+  proxy,
+  lpSolve,
+  survey
+)
diff --git a/inst/doc/Statistical_Matching_with_StatMatch.pdf b/inst/doc/Statistical_Matching_with_StatMatch.pdf
index 2e18c4e..5c78bad 100644
Binary files a/inst/doc/Statistical_Matching_with_StatMatch.pdf and b/inst/doc/Statistical_Matching_with_StatMatch.pdf differ