@book{
      international1994iaea,
      title={Energy and Economic Tables 1950-1991},
      author={ },
      series={entity},
      number={735 },
      year={1994},
      isbn={ },
      url={/publications/997/energy-and-economic-tables-1950-1991 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }