Vallenas, J.M. <br/><br/>
Hysteretic behavior of reinforced concrete structural walls- / by J. M. Vallenas, V.V. Bertero and E.P. Popov 

 - Berkeley, Calif. : e Engineering Research Center 
 - 234 p. 
 - Report ; No. UCB / EERC 79-20 .
<br/><br/> "Report to sponsor: National Science Foundation""August 1979"