diff --git a/README.md b/README.md
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@@ -55,7 +55,7 @@ Data exchange between network participants is carried out using application serv
 
 As shown in the figure above, HLS acts as an anonymizer and handlers of incoming and outgoing traffic. The remaining parts in the form of applications and services depend on third-party components (as an example, `HLM`).
 
-> More details in the work [Theory of the structure of hidden systems](https://github.com/number571/go-peer/blob/master/hidden_systems.pdf "TSHS")
+> More details in the work [Theory of the structure of hidden systems](https://github.com/number571/go-peer/blob/master/docs/hidden_systems.pdf "TSHS")
 
 ### Example
 
diff --git a/docs/README.md b/docs/README.md
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-# Programs based on articles
-
-1. hidden_systems:
-- `/cmd/*`
-2. proof_of_union:
-- `/cmd/ubc` (TODO)
diff --git a/hidden_systems.pdf b/hidden_systems.pdf
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