@book{
      international2006iaea,
      title={Negative Ion Based Neutral Beam Injectors},
      author={ },
      series={entity},
      number={ },
      year={2006},
      isbn={92-0-104806-8 },
      url={/publications/7504/negative-ion-based-neutral-beam-injectors },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }