Pre-Stressed Concrete Steel Wire Strand from the People's Republic of China, Preliminary Affirmative Countervailing Duty Determination, 2 November 2009, US Federal Register, document number E9-26322, p. 56576-56592.
Pre-Stressed Concrete Steel Wire Strand from the People's Republic of China, Preliminary Affirmative Countervailing Duty Determination, 2. marraskuuta 2009, US Federal Register, asiakirja nro E9-26322, s. 56576–56592.