Buttler, Dominik2013-02-142013-02-142009Ruch Prawniczy, Ekonomiczny i Socjologiczny 71, 2009, z. 4, s. 133-1430035-9629http://hdl.handle.net/10593/4558The paper outlines the economic interpretation of the existence and function of the nonprofit sector. The most popular economic theories in this field - so called demand-side theories - explain the existence of voluntary organisations as a response to government and market failures to satisfy the demand for certain goods. These theories are widely criticised. The author, however, claims that reinterpretation of some aspects of this approach creates an important and relatively unexplored area for further research.plArtykuł