Books on Amazon
There are two kinds of intentional explanations: those which explain what an acting person has tried to do, and those which explain what he has acheived.
Intentionality/Searle/Brandom: of the mind: intrinsic - not derived from itself, cannot be analyzed by itself - derived I: I from characters.
Animals also have derived intentionality.
Expressive Vernunft Frankfurt 2000
Begründen und Begreifen Frankfurt 2001