"Hatton, John Leigh Smeathman" <br/><br/>
Theory of the Imaginary in Geometry:Together With the Trigonometry of the Imaginary 

 - \\201000ENGGPSX 
 - Cambridge University Press   2010  London  
 - 217 p. 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>9.78E+12