need citation(s) for cfa... or remove from VF
From @bhaugen in SSB:
The model comes from Fernando Flores and some other people: http://conversationsforaction.com/the-book
We got the diagram from http://www.itu.dk/people/kasper/REA2004/pospapers/PrasadJayaweera.pdf (Used to have a citation in the VF intro, I think. @Lynn Foster we should have one.)
You can play with the protocol here: http://conversationsforaction.com/cfa-playground