Herdan, Gustav <br/><br/>
The calculus of linguistic observations / 
by Gustav Herdan 
 - 'S-gravenhage :  Mouton,  1962 
 - 271 p. :  ill. ;  27 cm. 
 - Janua linguarum. series maior  9 .
<br/><br/>Bibliography: p. 265-267. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical linguistics<br/>Information theory