@book{
international2013iaea,
title={Certified Reference Material IAEA-448: Soil from Oil Field Contaminated with Technically Enhanced Radium-226},
series={Analytical Quality in Nuclear Applications Series},
number={30},
year={2013},
url={http://www.dgdingfa.net/publications/10519/certified-reference-material-iaea-448-soil-from-oil-field-contaminated-with-technically-enhanced-radium-226},
publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
address={Vienna}
}