Kontorovič M. I. <br/><br/>
Nonlinear oscillations in radio engineering. Transl. from the Russian / 
Kontorovic M.I. 
 - Moskva :  Mir,  1976. 
 - 324 s.,bibliogr. ;  20 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>621.373