1. Competing technologies, increasing returns, and lock-in by historical events;Arthur;The Economic Journal,1989
2. Skitse til Alternativ Energiplan for Danmark;Blegaa,1976
3. Boccard, N., 2004. A benchmarking of 9 European member states policies towards distributed generation. SUSTELNET Report, University of Girona.
4. Danish Energy Authority, 1999. Opfølgning på Energi 21. Status for energiplanlegning+ bilagsrapport, version 19990701, Copenhagen.
5. Danish Energy Authority, 2004. Energy in Denmark 2003, Copenhagen.