Neumann, R. (1939). Symmetrical component analysis of unsymmetrical polyphase systems. Pitman.
Cita Chicago (17th ed.)Neumann, R. Symmetrical Component Analysis of Unsymmetrical Polyphase Systems. London: Pitman, 1939.
Cita MLA (8th ed.)Neumann, R. Symmetrical Component Analysis of Unsymmetrical Polyphase Systems. Pitman, 1939.
Atenció: Aquestes cites poden no estar 100% correctes.