--- a/Journal/document/root.bib	Tue Jul 26 10:58:26 2011 +0000
+++ b/Journal/document/root.bib	Tue Jul 26 18:12:07 2011 +0000
@@ -138,4 +138,11 @@
   number = {1/2}, 
   pages = {71--89},
   year = 2010
-} 
\ No newline at end of file
+} 
+
+@book{Sakarovitch09,
+  author    = {J.~Sakarovitch},
+  title     = {{E}lements of {A}utomata {T}heory},
+  publisher = {Cambridge University Press},
+  year      = {2009}
+}
\ No newline at end of file