A modification of the projective construction of quantum states for   field theories
  The projective construction of quantum states for field theories may be flawed--in some cases the construction may possibly lead to spaces of quantum states which are "too small" to be used in quantization of field theories. Here we present a slight modification of the construction which is free from this flaw. 
Jerzy Kijowski, Andrzej Okolow
math-ph gr-qc hep-th math.MP