diff --git a/pages/students/2016/maros_harahus/README.md b/pages/students/2016/maros_harahus/README.md
index 5637169a6..4cd33d828 100644
--- a/pages/students/2016/maros_harahus/README.md
+++ b/pages/students/2016/maros_harahus/README.md
@@ -40,6 +40,7 @@ Niekoľko odkazov:
 - https://thermocalc.com/academia/free-educational-package/
 - https://reader.elsevier.com/reader/sd/pii/S2352492820302178?token=5EA4D3B31E698BEEAE4DB08361F9F985EC80CAF012A4EE2E8EF11479A93BE1F14C1023E529FFE200659FE8A452345596&originRegion=eu-west-1&originCreation=20220117153447
 - Sandip Barui, Sankha Mukherjee, Amiy Srivastava,  Kinnor Chattopadhyay : Understanding Dephosphorization in Basic OxygenFurnaces (BOFs) Using Data DrivenModeling Techniques
+- https://www.chemeurope.com/en/encyclopedia/Basic_oxygen_steelmaking.html