diff --git a/subjects/lalgebra_scalar/README.md b/subjects/lalgebra_scalar/README.md
index be061e97..d717bbe4 100644
--- a/subjects/lalgebra_scalar/README.md
+++ b/subjects/lalgebra_scalar/README.md
@@ -49,3 +49,4 @@ $
 ### Notions
 
 - [Module std::ops](https://doc.rust-lang.org/std/ops/index.html)
+[Module std::marker::Sized](https://doc.rust-lang.org/std/marker/trait.Sized.html)