@article {1628,
	title = {Aerosol and solar radiation in Britain.},
	journal = {Quarterly Journal of the Royal Meteorological Society},
	volume = {98},
	year = {1972},
	pages = {778-797},
	author = {Unsworth, M.H. and Monteith, J.L.}
}
@article {1624,
	title = {Attenuation of solar radiation: a climatological study.},
	journal = {Quarterly Journal of the Royal Meteorological Society},
	volume = {88},
	year = {1962},
	pages = {508-521},
	author = {Monteith, J.L.}
}
