Trygve M. H. Reenskaug Professor II emeritus Institutt for informatikk, University of Oslo
Morgedalsvn. 5 N-0378 Oslo, Norway
Snailmail:
Morgedalsvn. 5, N-0378 Oslo, Norway
Telephone:
+47 22495727
http://heim.ifi.uio.no/~trygver/
Trygve introduced Model View Controller into Smalltalk while visiting Xerox Parc. He also wrote one of the articles in the famous Smalltalk Issue Of Byte.
Trygve has a book entitled
Working With Objects: The OOram Software Engineering Method with co-authors P. Wold and O.A.Lehne. He dedicates the book to Doug Engelbart ...
... because he made us understand that computers should be used to augment the human intellect rather than to replace it, and because his deep understanding of the symbiosis between humans and information is still far ahead of the rest of us.
(p.s. from Alistair Cockburn - - - I just learned that Trygve's last name is pronounced as "rain skau" (silent 'g', rhymes with 'how'). Try pronouncing it the Norwegian way if you meet him!) (and if he doesn't approve of it, let me know and take this message off!)
Trygve has been defining and working with Role Modeling for some years now.
To Supplement on that as the authentic Norwegian(tm) I am it's pronounced "Treegve Renskau". Pretty close the anyway as "rain" is in Norwegian "regn" and a reindeer is a "rein" in Norwegian
Working With Objects: The OOram Software Engineering Method is on Amazon, but it's apparently out of print: www.amazon.com 
(I didn't see an ISBN).
Working With Objects: The OOram Software Engineering Method can be found at the Manning site: www.manning.com
As people have said elsewhere it is not a simple read but is rife with interesting ideas.
Paul Karsten
See original on c2.com