G. Feixas is at the University of Barcelona, Spain and does not appear to
respond to e-mail, although I have his e-mail address if you would like it. I
would suggest you write instead.
He has not written a manual for it yet, but sends a paper he delivered on
how to make use of it. The measures he creates are fairly familiar to
most gridologists, but it based on the comparative analysis approach.
If you have trouble with his address, I'll dig it out for you.
Gwyneth Cheeseman