Chicago Spire

1. Walton, William / Diehm, Darren / Burns, Joseph / Sarabia, Fernando / Browne, Garret / Provanzana, Suzanne (2008): Geotechnical Engineering of the 600 m Chicago Spire. Presented at: 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008, pp. 614-615.

   https://doi.org/10.2749/222137908796294243

2. Dupré, Judith / Smith, Adrian (2008): Skyscrapers. A History of the World's Most Extraordinary Buildings. 2^nd edition, Black Dog & Leventhal Publishers, Inc., New York (USA), ISBN 978-1-57912-787-9, pp. 140-141.
3. Tomasetti, Richard / Burns, Joseph / Scarangello, Tom / McLean, Dave / Browne, Garret / Steele, Nicholas (2008): Structural Engineering of the 600 m Chicago Spire. Presented at: 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008, pp. 138-139.

   https://doi.org/10.2749/222137908796292029