Welsh, D. J. A <br/><br/>
Complexity : knots, colourings, and counting 
D.J.A. Welsh 
 - Cambridge  Cambridge University Press  1993 
 - viii, 163 p. : ill. ; 23 cm 
<br/><br/> Includes bibliographical references (p. 143-159) and index 
<br/><br/><label>ISBN: </label>9780521457408 
<br/><br/><label>ISSN: </label>94104623 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis<br/>Computational complexity<br/>Knot theory<br/>Statistical physics
<br/><br/><label>Dewey Class. No.: </label>511.3 WEL