Presentation-abstraction-control explanation

I am looking for a paper that would explain the PAC pattern well. So far all the stuff that I found is pretty sporadic. If there is an implementations of this pattern somewhere out there, that would be great too. Thanks

What is PAC in HCI?

Interaction-oriented architecture has two major styles − Model-View-Controller (MVC) and Presentation-Abstraction-Control (PAC). Both MVC and PAC propose three components decomposition and are used for interactive applications such as web applications with multiple talks and user interactions.

An old question but since I'm looking at the same I'll post this link "Interactive Application Architecture Patterns" that at least helped me clear everything up. Really nice write-up on a lot of MVC-like patterns and how they differ.