TY  - BOOK
AU  - Perin, D
AU  - Centro Electrotechnico Sperimentale Italiano
TI  - CESI AT-4444; EHVDC transmission systems-state of the art - Design of external insulation from the point of view of DC permanent voltage under polluted conditions Vol. 1.2/3.1
PY  - 1988///
CY  - Italy
PB  - CESI
ER  -