TY  - BOOK
AU  - Ziegler,Gerhard
ED  - Siemens Aktiengesellschaft
TI  - Numerical distance protection: principles and applications 
SN  - 9783895783814
PY  - 2011///
CY  - Erlangen
PB  - Publicis Corporate Pub.
KW  - Electric power systems
KW  - Protection
KW  - Protective relays
N1  - Includes bibliographical references and index
ER  -