Ungar, Abraham A <br/><br/>
Beyond the Einstein addition law and its gyroscopic Thomas precession : the theory of gyrogroups and gyrovector spaces 

 - Dordrecht ; Boston:  Kluwer Academic Publishers,  2001 
 - xlii, 413 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>9781402003530 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Hyperbolic
<br/><br/><label>Dewey Class. No.: </label>530.11 UNG