  Arrival directions of 63 extensive air showers with energies 4 10^19<E<=3
10^20 eV detected by the AGASA, Yakutsk, and Haverah Park arrays are analysed
in order to identify possible sources of cosmic rays with these energies. We
searched for active galactic nuclei within error boxes around the
shower-arrival directions and calculated the probabilities of objects being in
the error boxes by chance. Our previous result obtained in 1996-2001 (see
references in the text) is confirmed: the probabilities are small, P>3 sigma
(sigma is the parameter of Gaussian distribution)for Seyfert galaxies with
redshifts z<0.01. The Seyfert galaxies are characterized by moderate
luminosities (L<10^46 erg/s) and weak radio and X-ray emission.
  Astronomical and Astrophysical Transactions, 2003, v.22, #6, pp.(TBD)
