@article {Cooper1969,
	title = {The absorption of radiation in solar stills},
	journal = {Solar Energy},
	volume = {12},
	number = {3},
	year = {1969},
	note = {<br />},
	pages = {333 - 346},
	issn = {0038-092X},
	doi = {DOI: 10.1016/0038-092X(69)90047-4},
	url = {http://www.sciencedirect.com/science/article/B6V50-497BD6C-27/2/a4ca2069fe8c8b0cfa571de016d93cc5},
	author = {P.I. Cooper}
}
