Hajlasz, Piotr., et al <br/><br/>
Weakly differentiable mappings between manifolds   
by Piotr Hajlasz, et al 
 - Providence  American Mathematical Society  2008 
 - vii, 72  p 
 - Memoirs of the American Mathematical Society  899 .
<br/><br/><label>ISBN: </label>9780821840795 
<br/><br/><label>Dewey Class. No.: </label>516.36  / P083