Imbsen, Roy A. <br/><br/>
Seismic response of bridges: case studies / by Roy A. Imbse-n, Richard V. Nutt and Joseph Penzien 

 - Berkeley, Calif. : University of California, College of Engineering 
 - 214 p. 
 - Report ; No. UCB / EERC 78-14 .
<br/><br/> "Prepared under the sponsorship of the U.S. Department of T-ransportation, Federal Highway Administration".