“…In practice, it is difficult to translate this into operational measures of asset value and to design public policies that effectively enforce nondistribution. This is an area where economists and lawmakers are playing catch up, but some progress has been made (e.g., Gray, 1997or Goddeeris &: Weisbrod, 1999 Rahdert, 1976;Colombo &: Hall, 1995;Gergen, 1988;Simon, 1987). However, the concept of "treasury efficiency" first proposed by Vickrey (962) and extended and proved by Roberts (987) (see also Andreoni &: Bergstrom, 1996) counts as a major contribution by economists to this debate.…”