diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -29,3 +29,8 @@
 
 * Fourth version. Added a new module Languages.UniquenessPeriods.Vector.PropertiesSyllables with Ukrainian syllables related metrices. Added new
 dependencies of mmsyn7s and phonetic-languages-rhythmicity.
+
+## 0.4.0.1 -- 2020-10-08
+
+* Fourth version revised A. Some documentation improvments. Explicit specifying of the exported functions in the module
+Languages.UniquenessPeriods.Vector.PropertiesSyllables.
diff --git a/Languages/UniquenessPeriods/Vector/PropertiesSyllables.hs b/Languages/UniquenessPeriods/Vector/PropertiesSyllables.hs
--- a/Languages/UniquenessPeriods/Vector/PropertiesSyllables.hs
+++ b/Languages/UniquenessPeriods/Vector/PropertiesSyllables.hs
@@ -5,13 +5,19 @@
 -- Stability   :  Experimental
 -- Maintainer  :  olexandr543@yahoo.com
 --
--- Generalization of the functionality of the DobutokO.Poetry.Norms
+-- Generalization and extension of the functionality of the DobutokO.Poetry.Norms
 -- and DobutokO.Poetry.Norms.Extended modules
 -- from the @dobutokO-poetry@ package. Uses syllables information.
 
-{-# LANGUAGE CPP, BangPatterns #-}
+{-# LANGUAGE CPP #-}
 
-module Languages.UniquenessPeriods.Vector.PropertiesSyllables where
+module Languages.UniquenessPeriods.Vector.PropertiesSyllables (
+  -- * Rhythmicity metrices
+  -- ** A simple one
+  rhythmicity0
+  -- ** With weight coefficients
+  , rhythmicityK
+) where
 
 #ifdef __GLASGOW_HASKELL__
 #if __GLASGOW_HASKELL__>=710
@@ -20,7 +26,6 @@
 #endif
 #endif
 import qualified Data.Vector as V
-import String.Languages.UniquenessPeriods.Vector
 import Languages.Rhythmicity
 import MMSyn7.Syllable
 
diff --git a/uniqueness-periods-vector-properties.cabal b/uniqueness-periods-vector-properties.cabal
--- a/uniqueness-periods-vector-properties.cabal
+++ b/uniqueness-periods-vector-properties.cabal
@@ -3,7 +3,7 @@
 -- http://haskell.org/cabal/users-guide/
 
 name:                uniqueness-periods-vector-properties
-version:             0.4.0.0
+version:             0.4.0.1
 synopsis:            Metrices for the maximum element for the uniqueness-periods-vector packages family.
 description:         Metrices for the maximum element for the uniqueness-periods-vector packages family. Generalization of the DobutokO.Poetry.Norms and DobutokO.Poetry.Norms.Extended modules from dobutokO-poetry package.
 homepage:            https://hackage.haskell.org/package/uniqueness-periods-vector-properties