Hirsch,Robin and Hodkinson,Ian, <br/><br/>
Relation Algebras by Games 
By Robin Hirsch and Ian Hodkinson 
 - 1st Ed. 
 - Kidlington  Elsevier Ltd.  2002 
 - xvii;691p. 
<br/><br/><label>ISBN: </label>0-444-50932-1 
<br/><br/><label>Dewey Class. No.: </label>B2  / P2