Kaya, Izak <br/><br/>
Investigation of the nonlinear characteristics of a three-s-tory steel frame using system identification / by Izak Kaya- and Hugh D. McNiven 

 - Berkeley, Calif. : University of California, College of Engineering 
 - 86 p. 
 - Report ; No. UCB / EERC 78-25 .
<br/><br/> "Report to the National Science Foundation".