Nakano, Hisamatsu. <br/><br/>
Helical and spiral antennas  numerical approach 
by Hisamatsu Nakano 
 - Letchworth  Research Studies Press  1987 
 - xxi, 261p. 
 - Electronic & Electrical Engineering Research Studies, Electromagnetic Applications Series  No.2 .
<br/><br/><label>ISBN: </label>0863800602 
<br/><br/><label>Dewey Class. No.: </label>621.380283  / N872