Chapius, R. J. <br/><br/>
Electronics, computers and telephone switching: A look of technological history as volume 2;1960-1985 of "100 years of telephone switching" 

 - New York  North Holland Publishing  1990 
 - xvi,595p. 
 - Studies in telecommunication; v. 13 .
<br/><br/><label>ISBN: </label>0-444-88042-9