Modelling planning in ACT

[Stefani Nellen]

Hello ACT-users !
I am currently working on an ACT-R model which simulates subjects
planning behavior. Recently I had the idea to draw upon the Hayes-Roth
framwork of opportunistic planning as a theoretical source to be both
incorporated in and improved (!) by the ACT-model.

I have the following questions:
Are there any texts or papers on the relationship betwenn ACT and the
Hayes-Roth model?

And, more general, what is ACT-R's history of modeling planning
processes, or complex problems in general? (Isn't this more of a
trditioanl domain for Soar?)
I'd be very grateful if you could provide me with some Literary
recommendations !

cheers, Stefani