Engelfriet, Joost,  <br/><br/>
Simple program schemes and formal languages 
Joost Engelfriet. 
 - Berlin:   Springer-Verlag,   1974. 
 - vi, 254 pages;   25 cm. 
 - Lecture notes in computer science  20 .
<br/><br/>Bibliography: pages 248-254. 
<br/><br/><label>ISBN: </label>0387069534 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Formal languages.<br/>Programming (Electronic computers).