Burago, D., et al <br/><br/>
Course in metric geometry 
D. Burago, et al 
 - Providence  American Mathematical Society  2001 
 - xiv  415 
 - Graduate studies in mathematics 33 .
<br/><br/><label>ISBN: </label>9780821821299 
<br/><br/><label>Dewey Class. No.: </label>7.01+8.03  / BURA