@article{gebauer_krause-rehberg_domke_ebert_urban_staab_2001, 
  title={Direct identification of As vacancies in GaAs using positron annihilation calibrated by scanning tunneling microscopy}, 
  volume={63}, 
  DOI={10.1103/physrevb.63.045203}, 
  publisher={American Physical Society (APS)}, 
  author={Gebauer and Krause-Rehberg and Domke and Ebert and Urban and Staab}, 
  year={2001}, 
  month={Jan}
  }