diff --git a/0_vocabulary/README.md b/0_vocabulary/README.md
index 063acf0..1483f34 100644
--- a/0_vocabulary/README.md
+++ b/0_vocabulary/README.md
@@ -37,7 +37,7 @@ After you are done, notify your lead in an appropriate PR (pull request), and th
 _Additional_ articles, which may help to understand the above topic better:
 - [Chris Morgan: Rust ownership, the hard way][1]
 - [Adolfo Ochagavía: You are holding it wrong][23]
-- [Vikram Fugro: Beyond Pointers: How Rust outshines C++ with its Borrow Checker][30]
+- [Vikram Fugro: Beyond Pointers: How Rust outshines C++ with its Borrow Checker][29]
 - [HashRust: A guide to closures in Rust][24]
 - [Ludwig Stecher: Rusts Module System Explained][2]
 - [Tristan Hume: Models of Generics and Metaprogramming: Go, Rust, Swift, D and More][3]
@@ -58,7 +58,7 @@ _Additional_ articles, which may help to understand the above topic better:
 - [Auto-trait definition][18]
 - [Georgios Antonopoulos: Rust vs Common C++ Bugs][21]
 - [Yurii Shymon: True Observer Pattern with Unsubscribe mechanism using Rust][22]
-- [Asynchronous vs Multithreading][29]
+
 
 Additional:
 - [Rust API guidline checklist][19]
@@ -102,5 +102,4 @@ Additional:
 [26]: https://github.com/rust-lang-ua/learn_rust_together/blob/master/introduction.md
 [27]: https://github.com/rust-lang-ua/learn_rust_together/blob/master/toolbox_general.md
 [28]: https://github.com/rust-lang-ua/learn_rust_together/blob/master/learn.md
-[29]: https://github.com/Learn-Together-Pro/ComputerScience/blob/master/gcs/cheatsheets.md#asynchronous-vs-multithreading
-[30]: https://dev.to/vikram2784/beyond-pointers-how-rust-outshines-c-with-its-borrow-checker-1mad
+[29]: https://dev.to/vikram2784/beyond-pointers-how-rust-outshines-c-with-its-borrow-checker-1mad
diff --git a/orientation.md b/orientation.md
index 0123a49..05c841b 100644
--- a/orientation.md
+++ b/orientation.md
@@ -44,7 +44,7 @@ Also, Rust is not the worst choice nowadays:
 
 - [A large and friendly community](https://medium.com/mozilla-tech/growing-the-rust-community-6b6d23725085)
 - [Trending language: 7 years in a row as a favorite programming language ](https://survey.stackoverflow.co/2022/#section-most-loved-dreaded-and-wanted-programming-scripting-and-markup-languages)
-- [Fast](https://levelup.gitconnected.com/which-is-faster-rust-or-c-lets-find-out-who-is-the-usain-bolt-87495c774c8) and [secure](https://vegibit.com/is-rust-the-future-of-systems-programming/)
+- [Fast](https://levelup.gitconnected.com/which-is-faster-rust-or-c-lets-find-out-who-is-the-usain-bolt-87495c774c8) and [secure](https://medium.com/@elvisouma943/the-future-of-systems-programming-e99a46e3739b)
 - [Recognition by world leaders: Mozilla, Dropbox, Cloudflare, Discord, AWS](https://www.rust-lang.org/production/users)
 - [Rich ecosystem: cargo out of the box](https://lib.rs/stats)
 - Rust in the cores of [Linux](https://www.infoq.com/news/2022/12/linux-6-1-rust/) and [Windows](https://www.theregister.com/2023/04/27/microsoft_windows_rust/) : the language will not disappear and will continue to evolve