Oppenheim, Alan V..  <br/><br/>
Cifrovaja obrabotka signalov /  
Oppenheim Alan V., Schafer Ronald W., Sac S.Ja.. 
 - Moskva :   Svjaz',   1979. 
 - 416 s.;   24 cm. 
 - Electronic Science Series .
 - Electronic Science Series .