La CourJ. L., and BragstadO. S.., Theory and Calculation of Electric Currents, pp. 56–94. Longmans, Green (1913)
2.
MalletE.., Vectors for Electrical Engineers.Chapman and Hall (1933)
3.
HagueB.., Alternating Current Bridge Methods, pp. 37–45. Pitman (1938)
4.
StaffM. I. T.., Electric Circuits, pp. 478–501. Wiley (1943)
5.
SkillingH. H.., Electrical Engineering Circuits, pp. 230–242. Wiley (1957)
6.
MorrisD. G. O., The response functions and vector loci of first, and second order systems.Electron. Engng, p. 402 (Sept. 1955) and the three subsequent issues
7.
MorrisD. G. O.., Q as a mathematical parameter.Electron. Engng, p. 306 (July 1954)
8.
MorrisD. G. O.., Q and selectivity.Proc. Instn. Elect. Electron. Engrs, p. 87 (Jan. 1965)
