1. Dayton D, Goldman C, Pickle S. The energy services company (ESCO) industry: analysis of industry and market trends. In: Proceedings of the 1998 ACEEE Summer Study, vol. 6. Washington (DC): American Council for an Energy-Efficient Economy, 1998:29–45.
2. Fraser M, Montross C. Energy service companies: the sky's the limit! In: Proceedings of the 1998 ACEEE Summer Study, vol. 6. Washington (DC): American Council for an Energy-Efficient Economy, 1998:47–54.
3. Goldman C, Dayton D. Future prospects for ESCOs in a restructured electricity industry. In: Proceedings of the 1996 ACEEE Summer Study, vol. 10. Washington (DC): American Council for an Energy-Efficient Economy, 1996:59–69.
4. Energy service marketing: ESM supplants DSM;LeBlanc;Public Utilities Fortnightly,1995
5. Newcomb J. The future of energy efficiency services in a competitive environment. Boulder (CO): E Source, 1994.