Bertero, V.V. <br/><br/>
Hysteretic behavior of ductile moment resisting reinforced -concrete frame components / by V.V. Bertero and E.P. Popov. 

 - Berkeley, Calif. : University of California, College of Engineering 
 - 75 p. 
 - Report ; No. UCB / EERC 75-16. .
<br/><br/> "Report to sponsor National Science Foundation".