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-rw-r--r--apps/app_festival.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/apps/app_festival.c b/apps/app_festival.c
index 1fa935e0b..678b8cd86 100644
--- a/apps/app_festival.c
+++ b/apps/app_festival.c
@@ -21,6 +21,8 @@
* \brief Connect to festival
*
* \author Christos Ricudis <ricudis@itc.auth.gr>
+ *
+ * \extref The Festival Speech Synthesis System - http://www.cstr.ed.ac.uk/projects/festival/
*
* \ingroup applications
*/