Gerdau - Investor Relations

»	Bovespa - Bolsa de Valores de Săo Paulo

»	Nyse - New York Stock Exchange

»	Toronto Stock Exchange

»	Latibex - Madrid Stock Exchange

»	CVM - Comissăo de Valores Mobiliários

»	SEC - Securities and Exchange Comission

»	OSC - Ontario Securities Commission

»	Itaú

»	IBS - Instituto Brasileiro de Siderurgia

»	IISI - International Iron and Steel Institute

»	ILAFA - Instituto Latinoamericano del Fierro y el Acero

»	AIIS - American Institute for International Steel

»	AISI - American Iron and Steel Institute

»	CSPA/ACPA - Canadian Steel Producers Association

»	EUROFER - European Conferation of Iron and Steel Industries

»	Meps - International steel prices

»	US Census Bereau

»	USGS - Iron and Steel Scrap Statistics and Information