Books that have recently solidified some of the approaches take within the Noumena Cognitive Engine are:
Understanding Understanding by Heinz Von Foerster
Cybernetics of Cybernetics
Cybernetics and Human Knowing
Models of Thought by Herbert Simon
An essay, "Human Chess Skill", by Neil Charness. This essay is excellent in that Charness describes the approach that humans take to solving problems (obviously relative to chess) - via an understanding of visual perception, memory and evaluative mechanisms.