1. The Long Term Averaged Charge and Energy Spectra of the Galactic Cosmic Ray Nuclei with Z≥50;Akopova;Rev. Rouman. Phys.,1987
2. Measurements of Ultra Heavy Cosmic Rays with HEAO-3;Binns;Astrophys. J.,1982
3. Tracks of Heavy Charged Particles and Defects of the Structure in Meteoritic Olivine Crystals;Dolivo-Dobrovolskaya;Geochimiya,1976
4. Search for Super Heavy Elements in Nature;Flerov;Rep. Prpogr. Phys.,1983
5. Ultra Heavy Cosmic Ray Nuclei;Fowler,1967