Hofmann, Karl Heinrich. <br/><br/>
Elements of compact semigroups   
by Karl Heinrich Hofmann, Paul S. Mostert 
 - Columbus  Charles E.Merrill Books  1966 
 - xiii, 384p. 
<br/><br/><label>LCCN: </label>66-14401 
<br/><br/><label>Dewey Class. No.: </label>512.2  / N66