@inbook {169433,
	title = {Design and Performance Analysis of Small-Scale Parabolic Trough Solar Collectors Using Sustainable Materials},
	booktitle = {Reference Module in Materials Science and Materials Engineering},
	year = {2018},
	publisher = {Elsevier},
	organization = {Elsevier},
	address = { ‎Amsterdam},
	author = {Ahmed AShawky and Adel KH Khalil}
}
