Unruh, Eric L..  <br/><br/>
PLL :   Linear Phase-Locked Loop Control System Analysis. Software and User's Manual /  
Unruh Eric L.. 
 - London :   Artech - House,   1991. 
 - 68 s.:   il.;   28 cm. 
<br/><br/><label>ISBN: </label>0890065225