Trifunac, M.D. <br/><br/>
High frequency errors and instrument corrections of strong--motion accelerograms / by M.D. Trifunac , F.E. Udwadia and -A.G. Brady. 

 - Pasadena, Calif. : Research Laboratory 
 - 49 p. 
 - [Report] ; EERL 71-05 / CALTEC, Earthquake Engineering Rese-arch Laboratory .