@article {17723,
	title = {On the perturbation of Schur complement in positive semidefinite matrix},
	volume = {TR-95-38},
	year = {1995},
	month = {1995///},
	institution = {Instititue for Advanced Computer Studies, Univ of Maryland, College Park},
	abstract = {This note gives perturbation bounds for the Schur complement of apositive definite matrix in a positive semidefinite matrix.
},
	author = {Stewart, G.W.}
}
