Blair, D.E <br/><br/>
Contact manifolds in riemannian geometry 
D.E. Blair 
 - Berlin  Springer  1976 
 - vi  145 
 - Lecture notes in mathematics 509 .
<br/><br/><label>ISBN: </label>3540076263 
<br/><br/><label>Dewey Class. No.: </label>8.05+22  / BLAI