--- a/src/Doc/Codegen/Inductive_Predicate.thy Sun Jan 15 16:28:03 2023 +0100
+++ b/src/Doc/Codegen/Inductive_Predicate.thy Sun Jan 15 18:30:18 2023 +0100
@@ -23,7 +23,7 @@
which turns inductive specifications into equational ones, from
which in turn executable code can be generated. The mechanisms of
this compiler are described in detail in
- @{cite "Berghofer-Bulwahn-Haftmann:2009:TPHOL"}.
+ \<^cite>\<open>"Berghofer-Bulwahn-Haftmann:2009:TPHOL"\<close>.
Consider the simple predicate \<^const>\<open>append\<close> given by these two
introduction rules: