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-rw-r--r--cdr/cdr_pgsql.c1
-rw-r--r--cdr/cdr_radius.c1
-rw-r--r--cdr/cdr_sqlite.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/cdr/cdr_pgsql.c b/cdr/cdr_pgsql.c
index e8f5b73c1..34feca621 100644
--- a/cdr/cdr_pgsql.c
+++ b/cdr/cdr_pgsql.c
@@ -25,6 +25,7 @@
* \brief PostgreSQL CDR logger
*
* \author Matthew D. Hardeman <mhardemn@papersoft.com>
+ * \extref PostgreSQL http://www.postgresql.org/
*
* See also
* \arg \ref Config_cdr
diff --git a/cdr/cdr_radius.c b/cdr/cdr_radius.c
index 51563fabf..e79fc0170 100644
--- a/cdr/cdr_radius.c
+++ b/cdr/cdr_radius.c
@@ -20,6 +20,7 @@
*
* \brief RADIUS CDR Support
* \author Philippe Sultan
+ * \extref FreeRadius http://www.freeradius.org/
*
* \arg See also \ref AstCDR
* \ingroup cdr_drivers
diff --git a/cdr/cdr_sqlite.c b/cdr/cdr_sqlite.c
index c56fd4d9c..bcc50aa0e 100644
--- a/cdr/cdr_sqlite.c
+++ b/cdr/cdr_sqlite.c
@@ -22,6 +22,7 @@
* \brief Store CDR records in a SQLite database.
*
* \author Holger Schurig <hs4233@mail.mn-solutions.de>
+ * \extref SQLite http://www.sqlite.org/
*
* See also
* \arg \ref Config_cdr