Ultra-high energy cosmic rays from radio galaxies revisited

Ultra-High Energy Cosmic Rays from Young Neutron Star Winds

Ultra-High Energy Cosmic Rays in a Structured and Magnetized Universe

Ultra-high energy cosmic rays in the galactic corona

Ultra-high energy cosmic rays threshold in Randers-Finsler space

Ultra-high energy cosmic rays without GZK cutoff

Ultra-high energy cosmic rays, cascade gamma-rays, and high-energy neutrinos from gamma-ray bursts

Ultra-High Energy Cosmic Rays, Spiral galaxies and Magnetars

Ultra-high Energy Cosmic Rays: a probe into New Physics

Ultra-High Energy Cosmic Rays: A Probe of Physics and Astrophysics at Extreme Energies

Ultra-High Energy Cosmic Rays: a Window to Post-Inflationary Reheating Epoch of the Universe?

Ultra-high energy cosmic rays: are they isotropic?

Ultra-high energy cosmic rays: from GeV to ZeV

Ultra-High Energy Cosmic Rays: Some General Features, and Recent Developments Concerning Air Shower Computations

Ultra-High Energy Cosmic Rays: The Annihilation of Super-Heavy Relics

Ultra-High Energy Cosmic-Ray Acceleration in the Jet of Centaurus A

Ultra-High Energy Gamma Rays in Geomagnetic Field and Atmosphere

Ultra-High Energy Heavy Nuclei Propagation in Extragalactic Magnetic Fields

Ultra-high energy Neutrinos from Centaurus A and the Auger hot spot

Ultra-high energy nuclei source in the direction to Virgo cluster