+<h2>Technical note</h2>
+
+adns requires a real nameserver like
+<A href="http://www.isc.org/view.cgi?/products/BIND/index.phtml">BIND</A>
+or
+<A href="http://www.dents.org/">Dents</A> running on
+the same system or a nearby one, which must be willing to provide
+`recursive service'. I.e., adns is a `stub resolver'. All properly
+configured UN*X and GNU systems will already have such nameserver(s);
+they are usually listed in /etc/resolv.conf.
+
+<h2>References and related projects</h2>
+
+<ul>
+<li><a href="http://code.google.com/p/adns-python">Python bindings</a>
+ by Andy Dustman.
+<li><a href="http://cryp.to/hsdns/">Haskell bindings</a>
+ by Peter Simons.
+<li><a href="http://liboop.ofb.net/ref">liboop event loop library</a>
+ (by Dan Egnor) has a built-in binding for adns.
+<li><a href="http://adns.jgaa.com/">port to MS Visual Studio 6 C++</a>
+ by Jarle Aase.
+</ul>
+