A quite interesting paper that came out in the 2006 ESSDERC, and has now been published in an special issue of the IEEE TED. It has been written by R. Woltjer, L. Tiemeijer and D. Klaassen,
from the Philips Research Labs., Eindhoven.
They review compact modelling from its beginnings, and explain two different examples (the PSP model, obiously, and a compact model for integrated inductors). It is quite interesting as a first (or second...) contact with this world.
By the way, the paper (An industrial view on Compact Modelling) is here.