TY  - ICOMM
AU  - O'Brien, C
AU  - Burns, D
AU  - Kessler, C
C1  - http://iopscience.iop.org
C2  - http://iopscience.iop.org
DA  - 2012-03-23
LA  - en
PB  - http://iopscience.iop.org
PY  - 2012
TI  - Key Comparison BIPM.RI(I)-K2 of the air-kerma standards of the NIST, USA and the BIPM in low-energy x-rays
ER  -