@article {36118,
	title = {Determination of Nitrite in environmental samples using chemically modified carbon paste electrode based on new Co(III)-benzopyran-4-one Schiff base complex},
	journal = {Sensing in Electroanalysis},
	volume = {7},
	year = {2012},
	pages = {235-256 },
	author = {Y.M. Issa and Hosny Ibrahim and Ola R. Shehab}
}
