Rozenberg, Grzegorz. <br/><br/>
The mathematical theory of L systems / 
Grzegorz Rozenberg and Arto Salomaa. 
 - New York :  Academic Press,  1980. 
 - 352 p. ;  23 cm. 
 - Pure and applied mathematics, a series of mongraphs and textbooks .
<br/><br/> Includes biblographical references and indexes. 
<br/><br/><label>ISBN: </label>0125971400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>L systems.<br/>Formal languages.