1. Standard Specifications for Highway Bridges, Washington, DC;AASHTO (American Association of State Highway and Transportation Officials),2002
2. Influence of in-service environment on modal parameters;Alampalli,1998
3. Alaska Department of Transportation and Public Facilities;Alaska Bridges & Structures Manual,2017
4. The modal assurance criterion - twenty years of use and abuse;Allemang;Sound Vib.,2003