diff --git a/articles/White noise - Wikipedia/White noise - Wikipedia.pdf.txt b/articles/White noise - Wikipedia/White noise - Wikipedia.pdf.txt
new file mode 100644
index 0000000..e462a23
--- /dev/null
+++ b/articles/White noise - Wikipedia/White noise - Wikipedia.pdf.txt	
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diff --git a/articles/White noise - Wikipedia/White noise - Wikipedia.xopp.xml b/articles/White noise - Wikipedia/White noise - Wikipedia.xopp.xml
new file mode 100644
index 0000000..d45adf2
--- /dev/null
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