Citation: B. Wacker et al., TECHNOLOGIES WITH POWER CONVERTER-GRID CONNECTION IN THE ELECTRIC ENERGY SUPPLY, CONSIDERATIONS CONCERNING THE FUEL-CELL POWER-STATION - OBSERVATIONS REGARDING THE FUEL-CELL POWER-STATION AND THE SUPERCONDUCTIVE MAGNETIC ENERGY ACCUMULATOR, Brennstoff-Warme-Kraft, 45(6), 1993, pp. 308-309