@article{oai:repository.dl.itc.u-tokyo.ac.jp:00000849,
 author = {Campanelli, Monica and Nakajima, Teruyuki and Olivieri, Bruno},
 issue = {3},
 journal = {Applied optics},
 month = {Jan},
 pages = {651--659},
 title = {Determination of the solar calibration constant for a sun-sky radiometer : proposal of an in-situ procedure},
 volume = {43},
 year = {2004}
}