1. Agência Nacional De Energia Elétrica—ANEEL, 2006. Average Tariffs by Consumption Class by Regions and Brazil (R$/MWh). Available at 〈http://www.aneel.gov.br/〉. Acess in: 2006, March.
2. Asea-Pacific Economic Cooperation—Energy Standards Information System (APEC-ESIS), 2003. A Survey of Efficiency Levels Specified for Three-Phase Cage Induction Motors.
3. BACEN—Banco Central do Brasil, 2006. Site with data from the financial Brazilian system. Available at: 〈http://www.bacen.gov.br〉. Acess in: 2006, Apr.
4. Banco Itaú, 2006. Daily Analisys. Available at: 〈http://www.itau.com.br〉. Acess in: 2006, Apr.
5. CEPEL—Centro de Pesquisas em Energia Elétrica, 2003. BDMOTOR. Software. Cepel, Rio de Janeiro. 1 CD-ROM.