Kelly, James M. <br/><br/>
Experimental testing of a friction damped aseismic base iso-lation system with fail-safe characteristics / by James M.- Kelly, Karl E. Beucke, Mark S. Skinner 

 - Berkeley, Calif. : University of California, College of Engineering 
 - 58 p. 
 - Report ; No. UCB / EERC 80-18 .