diff --git a/doc/qemu_xorriso.wiki b/doc/qemu_xorriso.wiki
index 0d095f03..c4f27408 100644
--- a/doc/qemu_xorriso.wiki
+++ b/doc/qemu_xorriso.wiki
@@ -6,10 +6,11 @@ system.
 The options follow proposals of Paolo Bonzini on qemu-devel mailing list.
 My compliments for his patient guidance.
 
-This worked with with qemu-1.0-rc3.
+Basic knowledge about Debian and qemu was learned from
+[http://www.gnu.org/s/hurd/hurd/running/qemu.html GNU Hurd qemu page].
 
 ----------------------------------------------------------------------
-qemu start command :
+This start command works with with qemu-1.0-rc3:
 
 {{{
   $ qemu \