diff --git a/docs/docs.md b/docs/docs.md
index 9e0a658..bc57bfa 100644
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+++ b/docs/docs.md
@@ -15,6 +15,7 @@
 
 ## Developers
 * [How to contribute](contribute.md)
+* [Description of the YaCy Distributed Web Search Engine](https://yacy.net/material/Description_of_the_YaCy_Distributed_Web_Search_Engine_Herrmann_Ning_Diaz_Preneel_ESAT_KULeuven_COSIC_article-2459.pdf) - scientific paper describing the technology
 * [Crawler API](api/crawler.md)
 * [javadoc](https://yacy.net/api/javadoc/) - generated documentation for YaCy's java source code