diff --git a/Reverse-Proxy-Hints.md b/Reverse-Proxy-Hints.md
index 42c7f94..d760a15 100644
--- a/Reverse-Proxy-Hints.md
+++ b/Reverse-Proxy-Hints.md
@@ -1,3 +1,6 @@
+See also
+* https://radicale.org/v3.html#reverse-proxy
+
 # Authentication
 
 ## Stripping domain name from authenticated user