Norkin S B <br/><br/>
Differential equations of the second order with reatrded argument:Some problems of the theory of vibrations of systems with retardation 

 -  1972 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>22902 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B331,2, L2