Ramsdale, P.Library Economics in Europe: An Update 1981-1990 . Luxembourg : Office for Official Publications of the European Communities, 1995.
3.
Ramsdale, P. and D. Fuegi.Library Economics in Central and Eastern Europe. Luxembourg: Office for Official Publications of the European Communities, 1997 .
4.
By sectors I mean types of libraries as defined in ISO 2789 (public libraries, national libraries, etc.).