@article {16022,
	title = {Microdetermination of vitamine D2 (ergocalciferol) using N- bromosuccinimide},
	journal = {Pharmazie},
	volume = {47},
	year = {1992},
	pages = {110},
	author = {Fathy A. Khalifa and Fawzy A. Attaby and Zeinab M. Turk}
}
