@misc{1179471, author = {W F Koch and G Marinenko and J W Stolz}, title = {Simulated precipitation reference materials, IV:}, year = {1982}, month = {1982-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.82-2581}, language = {en}, }