@conference{UBHD-67496447,
  author={Fuchs, Burkhard and Friese, Volker and Reffert, Heiko and Wielen, Roland},
  title={Disks and dark haloes of dwarf spirals},
  year={1995},
  pages={224},
  language={eng},
}
@book{UBHD-9909643,
  author={Reffert, Heiko},
  title={N-K{\"o}rper-Simulationen zur Dynamik offener Sternhaufen},
  year={1999},
  pages={100 S.},
  language={ger},
  school={Heidelberg, Univ., Diss., 1999},
  library={UB [Signatur: 99 U 223]},
}