@misc{42371, author = {Howard Yoon and Charles Gibson}, title = {SP250 Spectral Irradiance Calibrations}, year = {2011}, month = {2011-07-25}, publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.SP.250-89}, language = {en}, }