Greiger, Daha F Phaselock loops for DC motor speed control / Daha F Greiger - New york : John wiley, c1981. - xi , 20 p. ; ill. ; 23 cm. ISBN: 0470085480 LCCN: Subjects--Topical Terms: Electric motorsPhase locked loops LC Class. No.: TK7887.55 / .G44 1981 Dewey Class. No.: 621.46 / G312p