Iversen, Birger <br/><br/>
Geometry of surfaces 
Birger Iversen 
 - Aarhus  Aarhus Univ. matematisk institut  1994 
 - 194 p  20 cm 
 - Lecture notes series  63 .
<br/><br/> Contine bibliogr 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Differential 1- forms<br/>Hyperbolic plane