@article{herrera_nordskag_myhre_halvorsen_2009, 
  title={Aviation safety and maintenance under major organizational changes, investigating non-existing accidents}, 
  volume={41}, 
  DOI={10.1016/j.aap.2008.06.007}, 
  publisher={Elsevier BV}, 
  author={Herrera and Nordskag and Myhre and Halvorsen}, 
  year={2009}
  }