RICHARD ROEPER, . (1985). SHORT-CIRCUIT CURRENTS IN THREE PHASE SYSTEM. : WILEY EASTERN LTD.
RICHARD ROEPER, . 1985. SHORT-CIRCUIT CURRENTS IN THREE PHASE SYSTEM. : WILEY EASTERN LTD.
RICHARD ROEPER, . SHORT-CIRCUIT CURRENTS IN THREE PHASE SYSTEM. : WILEY EASTERN LTD. 1985.