diff --git a/haskell_101/slides/haskell_101.tex b/haskell_101/slides/haskell_101.tex
index bf5f3c4..a190d91 100644
--- a/haskell_101/slides/haskell_101.tex
+++ b/haskell_101/slides/haskell_101.tex
@@ -912,6 +912,7 @@ \section{Links}
   \item \href{http://haskellbook.com}{haskellbook.com}
   \item \href{https://www.haskell.org/hoogle/}{haskell.org/hoogle/}
   \item \href{https://dev.to/stereobooster/pragmatic-types-type-systems-vs-tests-4k3e}{Pragmatic types: types vs tests}
+  \item \href{https://www.cs.kent.ac.uk/people/staff/dat/miranda/whyfp90.pdf}{Why functional programming matters}
   \end{itemize}
 \end{frame}