@article{55786,
  author = {C O'Brien and L. Buermann and P. Butler and I. Csete and F. Gabris and A. Hakanen and J. Lee and M. Palmer and N. Saito and W. deViries},
  title = {Comparison of national air kerma standards for ISO 4037 narrow spectrum series in the range 30 kV to 300 kV.},
  year = {2009},
  number = {45},
  month = {2009-02-01},
  publisher = {Metrologia},
  language = {en},
}