@misc{Kurz2005,
  author    = {Martin Kurz},
  title     = {Hf-Fokussierung},
  booktitle = {Institut f{\"u}r Angewandte Physik der Universit{\"a}t Frankfurt am Main : Interner Report ; 89,8},
  url       = {http://sunkist.physik.uni-frankfurt.de/mikro/publications.html},
  institution = {Physik},
  series    = {Interner Report / Institut f{\"u}r Angewandte Physik der Universit{\"a}t Frankfurt am Main},
  number    = {89, 8},
  type      = {workingpaper},
  pages     = {6},
  year        = {2005},
}