diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -55,3 +55,8 @@
 
 * Second version. Added new variants of the uzpp2Durat1 and syllableDurations functions, obtained from the execution of the pldUkr from the
 r-glpk-phonetic-languages-ukrainian-durations package.
+
+## 0.2.0.1 -- 2020-11-09
+
+* Second version revised A. Some documentation improvements.
+
diff --git a/Languages/Phonetic/Ukrainian/Syllable.hs b/Languages/Phonetic/Ukrainian/Syllable.hs
--- a/Languages/Phonetic/Ukrainian/Syllable.hs
+++ b/Languages/Phonetic/Ukrainian/Syllable.hs
@@ -204,7 +204,9 @@
         ("ць", 0.089342), ("ч", 0.057596), ("ш", 0.066077), ("ь", 0.020227), ("і", 0.094150), ("ґ", 0.062948)])
 
 -- | Just another possible duration approximation obtained by usage of the @r-glpk-phonetic-languages-ukrainian-durations@ package
--- https://hackage.haskell.org/package/r-glpk-phonetic-languages-ukrainian-durations
+-- https://hackage.haskell.org/package/r-glpk-phonetic-languages-ukrainian-durations.
+-- It is generated for the set of the words-durations pairs that the words contents ('Char') converts to the elements of the
+-- \"ABCEFXYabcdefghijklmnopqrstuvwxyz\".
 uzpp2Durat2 :: UZPP2 -> Float
 uzpp2Durat2 = X.getBFst' (0.06408817,VB.fromList [(UZ 'A' D, 0.07729654), (UZ 'A' K, 0.07729654), (UZ 'B' D, 0.08048113), (UZ 'B' K, 0.08048113),
   (UZ 'C' S, 0.08226452), (UZ 'D' N, 0.07512999), (UZ 'E' L, 0.12541547), (UZ 'E' M, 0.12541547), (UZ 'F' L, 0.12838476), (UZ 'F' M, 0.12838476),
diff --git a/ukrainian-phonetics-basic.cabal b/ukrainian-phonetics-basic.cabal
--- a/ukrainian-phonetics-basic.cabal
+++ b/ukrainian-phonetics-basic.cabal
@@ -2,7 +2,7 @@
 -- further documentation, see http://haskell.org/cabal/users-guide/
 
 name:                ukrainian-phonetics-basic
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            A library to work with the basic Ukrainian phonetics and syllable segmentation.
 description:         A library to work with the basic Ukrainian phonetics and syllable segmentation. Rewritten from the mmsyn6ukr and mmsyn7s packages.
 homepage:            https://hackage.haskell.org/package/ukrainian-phonetics-basic