Ziegler G. Gerhard. (2012). Numerical Differential Protection. Principles and Application (2nd ed.). Erlangen, Publicis Publishing, 2012.
Cita Chicago (17th ed.)Ziegler G. Gerhard. Numerical Differential Protection. Principles and Application. 2nd ed. Erlangen, Publicis Publishing, 2012, 2012.
Cita MLA (9th ed.)Ziegler G. Gerhard. Numerical Differential Protection. Principles and Application. 2nd ed. Erlangen, Publicis Publishing, 2012, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.