Selection of various articles:

Neutrons From Spontaneous Fission Of Long-Lived Super- Heavy Nuclei
    A.Svirikhin et al, AIP Conf. Proc. 1175, 297 (2009)

On search and identification of tracks due to short-lived SHE nuclei in extraterrestrial crystals

    V. P. Perelygin et al., Radiation Measurements 36(2003)271

Search for relatively stable super heavy elements in nature by fossil track studies of crystals from meteorites and moon surface 

    V. P. Perelygin et al., Proceedings of Lunar and Planetary Science XXXIII(2002)

Study of fossil tracks due to 50 ≤ Z ≤ 92 galactic cosmic ray nuclei in meteoritic crystals: results and perspectives  

    V. P. Perelygin et al., Radiation Measurements 31(1999)609-614

Evidence against Superheavy Elements in Giant-Halo Inclusions Re-examined with Synchrotron Radiation
      C. J. Sparks, et al, Physical Review letters Vol. 40, N8 (1978) 507

Superheavy elements in nature?: Fissiogenic xenon in Sudbury, Ontario, norite
      W. L. RAINES et al, Geochemical Journal, Vol. 12, pp. 265 to 270, 1978

Evidence for superheavies in mica looks weaker

      Physics today, January 1977

Les noyaux superlourds et les possibilités de leurs recherches à Madagascar

      Paic G. et al,  Sciences de la natures et mathématiques, N°14 (1977) 303

 Search for superheavy elements in Nature

     C. Stefan et al, Le Journal de Physique Tome 36, N°2, Février 1975, 105

Super-heavy Elements in Extraterrestrial Samples

Elements 112 to 119: Were They Present in Meteorites?

    Edward Anders and Dieter Heymann, Science 164(1969)821