K. Billah and R. Scanlan (1991), Resonance, Tacoma Narrows Bridge Failure, and Undergraduate Physics Textbooks, American Journal of Physics, 59(2), 118—124 (PDF)
Bažant, Zdeněk P.; Le, Jia-Liang; Greening, Frank R.; Benson, David B. (27 May 2007). "Collapse of World Trade Center Towers: What Did and Did Not Cause It?"(PDF). Journal of Engineering Mechanics. 22 June 2007. Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois 60208, US. Structural Engineering Report No. 07-05/C605c (page 12). Archived from the original(PDF) on 9 August 2007. Retrieved 17 September 2007.
"2006 Metro Area Traffic Volume Index Map"(PDF). Mn/DOT. 2006. Retrieved 9 August 2007. Index map for Mn/DOT's 2006 traffic volumes; relevant maps showing the highest river bridge traffic volumes are Maps 2E, 3E, and 3F.
"2006 Downtown Minneapolis Traffic Volumes"(PDF). Minnesota Department of Transportation. 2006. Retrieved 7 August 2007. This map shows average daily traffic volumes for downtown Minneapolis. Trunk highway and Interstate volumes are from 2006.
Bažant, Zdeněk P.; Le, Jia-Liang; Greening, Frank R.; Benson, David B. (27 May 2007). "Collapse of World Trade Center Towers: What Did and Did Not Cause It?"(PDF). Journal of Engineering Mechanics. 22 June 2007. Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois 60208, US. Structural Engineering Report No. 07-05/C605c (page 12). Archived from the original(PDF) on 9 August 2007. Retrieved 17 September 2007.