diff --git a/articles/preprint-PRNU_WIFS-3/preprint-PRNU_WIFS-3.xopp.xml b/articles/preprint-PRNU_WIFS-3/preprint-PRNU_WIFS-3.xopp.xml
index 7ee2db0..0cbf2b1 100644
--- a/articles/preprint-PRNU_WIFS-3/preprint-PRNU_WIFS-3.xopp.xml
+++ b/articles/preprint-PRNU_WIFS-3/preprint-PRNU_WIFS-3.xopp.xml
@@ -226,6 +226,49 @@
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