Kuich Werner <br/><br/>
Semirings, automata languages 
Kuich Werner; Salomaa Arta 
 - Berlin  Springer-Verlag           1986 
 - 374p.  cm. 
 - EATSC monographs on theoretical computers science; 5 .
<br/><br/><label>Standard No.: </label>40043 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical logic
<br/><br/><label>Dewey Class. No.: </label>B:(R1), M6