diff --git a/articles/Fixed-pattern noise - Wikipedia/Fixed-pattern noise - Wikipedia.pdf.txt b/articles/Fixed-pattern noise - Wikipedia/Fixed-pattern noise - Wikipedia.pdf.txt
new file mode 100644
index 0000000..b5d82a3
--- /dev/null
+++ b/articles/Fixed-pattern noise - Wikipedia/Fixed-pattern noise - Wikipedia.pdf.txt	
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diff --git a/articles/Fixed-pattern noise - Wikipedia/Fixed-pattern noise - Wikipedia.xopp.xml b/articles/Fixed-pattern noise - Wikipedia/Fixed-pattern noise - Wikipedia.xopp.xml
new file mode 100644
index 0000000..39924d7
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+      <text font="Sans" size="12.00000000" x="45.03552702" y="612.63634116" color="#00c0ffff" ts="0" fn="">could look at article sources or more especially for the PRNU article</text>
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