@misc{indiciae866f06f8dba8, title = {Results of the U.S. Geological Survey's Analytical Evaluation Program for Standard Reference Samples Distributed in March 2000}, author = {Jerry W. Farrar and Ashley M. Copen}, year = {2000}, doi = {10.3133/ofr00398}, url = {https://pubs.usgs.gov/publication/ofr00398}, note = {Source identifier: ofr00398} }