IEE CONFERENCE PUBLICATION 301 <br/><br/>
"International conference on antennas &propagation, 6(ICAP 89) (Univ.of Warwick, UK)April 4-7, 1989. Part 2: Propagation" 

 -  IEE  1989 
 - xxiii p. + 474 
 - IEE Conference Publication .