diff --git a/citation-resolve.cabal b/citation-resolve.cabal
--- a/citation-resolve.cabal
+++ b/citation-resolve.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                citation-resolve
-version:             0.4.1
+version:             0.4.2
 synopsis:            convert document IDs such as DOI, ISBN, arXiv ID to bibliographic reference.
 description:         
   This modules provides a way to convert document identifiers, such
diff --git a/src/Text/CSL/Input/Identifier.hs b/src/Text/CSL/Input/Identifier.hs
--- a/src/Text/CSL/Input/Identifier.hs
+++ b/src/Text/CSL/Input/Identifier.hs
@@ -11,7 +11,8 @@
 --  making the server load as little as possible.
 
 module Text.CSL.Input.Identifier
-       (resolveEither, resolve, withDatabaseFile, Database(..), database, databaseMap, HasDatabase(..))
+       (resolveEither, resolve, withDatabaseFile, Database(..), database, databaseMap, HasDatabase(..),
+        toBibTeXItem)
        where
 
 import qualified Control.Lens as Lens