Lingenberg, Rolf <br/><br/>
Metric planes and metric vector spaces 
Rolf Lingenberg 
 - New York  John Wiley&Sons  1979 
 - XI, 201 p  fig  24 cm 
<br/><br/> Contine bibliogr. si index 
<br/><br/><label>ISBN: </label>0471049018