--- a/src/Doc/Implementation/Eq.thy Sun Jan 15 16:28:03 2023 +0100
+++ b/src/Doc/Implementation/Eq.thy Sun Jan 15 18:30:18 2023 +0100
@@ -74,10 +74,10 @@
section \<open>Conversions \label{sec:conv}\<close>
text \<open>
- The classic article @{cite "paulson:1983"} introduces the concept of
+ The classic article \<^cite>\<open>"paulson:1983"\<close> introduces the concept of
conversion for Cambridge LCF. This was historically important to implement
all kinds of ``simplifiers'', but the Isabelle Simplifier is done quite
- differently, see @{cite \<open>\S9.3\<close> "isabelle-isar-ref"}.
+ differently, see \<^cite>\<open>\<open>\S9.3\<close> in "isabelle-isar-ref"\<close>.
\<close>
text %mlref \<open>