  I recently proposed a method of bosonization based on the use of coherent
states of fermion composites, whose validity was restricted to smooth structure
functions. In the present paper I remove this limitation and derive results
which hold for arbitrary interactions and structure functions. The method
respects all symmetries and in particular fermion number conservation. It
reproduces exactly the results of the pairing model of atomic nuclei and of the
BCS model of superconductivity in the number conserving form of the
quasi-chemical equilibrium theory.
