@book{
      international1991iaea,
      title={Emergency Power Systems at Nuclear Power Plants},
      author={ },
      series={entity},
      number={50-SG-D7 (REV. 1) },
      year={1991},
      isbn={92-0-123291-8 },
      url={/publications/3741/emergency-power-systems-at-nuclear-power-plants },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }