Before revision: X-bracing is a structural engineering innovation developed by Fazlur KhanAli Mir (2001), Art of the Skyscraper: the Genius of Fazlur Khan, Rizzoli International Publications, ISBN 0-8478-2370-9 .
After revision: X-bracing is a structural engineering innovation developed by Fazlur Khan.Ali Mir (2001), Art of the Skyscraper: the Genius of Fazlur Khan, Rizzoli International Publications, ISBN 0-8478-2370-9