@misc{1196956, author = {Ahmet T Ince and Gregory F Strouse}, title = {Standard Reference Materials ::Standard reference material 1747 /}, year = {1997}, month = {1997-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.SP.260-127}, language = {en}, }