@book{
      international1987iaea,
      title={International Centre for Theoretical Physics: Scientific Activities in 1986},
      author={ },
      series={entity},
      number={437 },
      year={1987},
      isbn={ },
      url={/publications/692/international-centre-for-theoretical-physics-scientific-activities-in-1986 },
      publisher={INTERNATIONAL ATOMIC ENERGY AGENCY },
      address={Vienna}
    }