diff --git a/apps/overload/README.md b/apps/overload/README.md
index 51a50f9..e035657 100644
--- a/apps/overload/README.md
+++ b/apps/overload/README.md
@@ -27,7 +27,6 @@ To achieve this, we will use overload functions.
 7. Submit a PR with a title beginning with **Answer:15** that I will review and other dev can review.
 
 <a href="https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A15+label%3Aanswer"><img src="https://img.shields.io/badge/-Solutions-green" alt="overload"/></a>
-
 <a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A15+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="overload solution author"/></a>
 <a href="https://medium.com/ngconf/function-overloading-in-typescript-8236706b2c05" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="overload blog article"/></a>
 
diff --git a/apps/pipe-easy/README.md b/apps/pipe-easy/README.md
index 92f3ab9..f39542e 100644
--- a/apps/pipe-easy/README.md
+++ b/apps/pipe-easy/README.md
@@ -25,9 +25,7 @@ In this first exercice, you add calling a simple function inside your template.
 7. Submit a PR with a title beginning with **Answer:8** that I will review and other dev can review.
 
 <a href="https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A8+label%3Aanswer"><img src="https://img.shields.io/badge/-Solutions-green" alt="Pure simple pipe"/></a>
-
-<a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A{challenge number}+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="Pure simple pipe solution author"/></a>
-
-<!-- <a href="{Blog post url}" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="Pure simple pipe blog article"/></a> -->
+<a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A8+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="Pure simple pipe solution author"/></a>
+<a href="https://medium.com/ngconf/deep-dive-into-angular-pipes-c040588cd15d" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="Pure simple pipe blog article"/></a>
 
 _You can ask any question on_ <a href="https://twitter.com/laforge_toma" target="_blank" rel="noopener noreferrer"><img src="./../../logo/twitter.svg" height=20px alt="twitter"/></a>
diff --git a/apps/pipe-intermediate/README.md b/apps/pipe-intermediate/README.md
index 33cb327..cc8dbd0 100644
--- a/apps/pipe-intermediate/README.md
+++ b/apps/pipe-intermediate/README.md
@@ -26,9 +26,7 @@ The goal is to create a `wrapFn` pipe to wrap your callback function though a pi
 7. Submit a PR with a title beginning with **Answer:9** that I will review and other dev can review.
 
 <a href="https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A9+label%3Aanswer"><img src="https://img.shields.io/badge/-Solutions-green" alt="WrapFn pipe"/></a>
-
-<a href='https://github.co m/tomalaforge/angular-challenges/pulls?q=label%3A9+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="WrapFn pipe solution author"/></a>
-
-<!-- <a href="{Blog post url}" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="WrapFn pipe blog article"/></a> -->
+<a href='https://github.com/tomalaforge/angular-challenges/pulls?q=label%3A9+label%3A"answer+author"'><img src="https://img.shields.io/badge/-Author solution-important" alt="WrapFn pipe solution author"/></a>
+<a href="https://medium.com/ngconf/boost-your-apps-performance-by-wrapping-your-functions-inside-a-pipe-7e889a901d1d" target="_blank" rel="noopener noreferrer"><img src="https://img.shields.io/badge/-Blog post explanation-blue" alt="WrapFn pipe blog article"/></a>
 
 _You can ask any question on_ <a href="https://twitter.com/laforge_toma" target="_blank" rel="noopener noreferrer"><img src="./../../logo/twitter.svg" height=20px alt="twitter"/></a>