Van der Pol, Balth. <br/><br/>
Operational calculus  based on the two sided laplace integral 
by Balth Van der Pol, H. Bremmer 
 - 2nd 
 - Cambridge  Cambridge University Press  1955 
 - xiii, 409p. 
<br/><br/><label>Dewey Class. No.: </label>515.72  / N55