Обсуждение: GEQO Publications

Hi all,

I'm looking for materials explaining GEQO module. I've found
something related in
http://www.mail-archive.com/pgsql-hackers@postgresql.org/msg40584.html 
and PostgreSQL's documentation.

Nevertheless, is there some other cientific publication about it?
I've tried also send email to Martin Utesch at utesch@aut.tu-freiberg.de
but this email appear invalid.

If someone can help me.

Thanks for attention,

Adriano