Broken upgrade_tips link

I'm in the midst of upgrading a Solaris 8 machine from 7.2.3 to 7.3.2.
In

    http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=release.html#RELEASE-7-3

it refers to

    http://www.ca.postgresql.org/docs/momjian/upgrade_tips_7.3

in the "Migration to version 7.3" appendix.  I tried several variants
but can't find that document.  Google wasn't any help either.

Pointers appreciated.

Thx,

Skip Montanaro
skip@pobox.com