Hello, Karl!
Thank you for links.
You can also try the ready-made standard profiles from
www.colormanagement.org.
I sample GCR-profile based on fogra39 from this, it is
inferior in
quality to the profile of Heidelberg PrintOpen (now Color Toolbox),
comparison in attachment or this:
http://rudtp.pp.ru/forum/download/file.php?id=552&mode=view