diff --git a/content/portfolio/index.en.md b/content/portfolio/index.en.md
index eeabc51..487ba4a 100644
--- a/content/portfolio/index.en.md
+++ b/content/portfolio/index.en.md
@@ -11,8 +11,10 @@ date: 2022-03-10T00:40:51+02:00
 **Kronos Production Analyser**
 
 Kronos is an automatic production process analysis system based on publications
-and works by [Professor Mario Morroni](https://it.wikipedia.org/wiki/Mario_Morroni)
-and Professor Vittorio Moriggia.
+and works by Professor Mario Morroni
+([bio](https://it.wikipedia.org/wiki/Mario_Morroni) in Italian)
+and Professor Vittorio Moriggia
+([bio](https://didattica-rubrica.unibg.it/ugov/person/3026) in Italian).
 It splits a single production process into multiple phases, summarizing
 each phase's monetary and time expenses, underlying costs, revenues and
 workforce involved.