@article {habib1997novel,
	title = {Novel Bandgap grading technique for enhancing the limiting efficiency of solar cells},
	journal = {Renewable energy},
	volume = {10},
	number = {2},
	year = {1997},
	note = {<p>n/a</p>
},
	pages = {129{\textendash}134},
	publisher = {Elsevier},
	abstract = {<p>n/a</p>
},
	author = {S. E.-D. Habib and NADIA H. RAFAT}
}
