@misc{1162456, author = {David T Goldman and R J Bell}, title = {The international system of units (SI):}, year = {1981}, month = {1981-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.SP.330e1981}, language = {en}, }