@article {icl:545,
	title = {Sparse approximations of the Schur complement for parallel algebraic hybrid solvers in 3D},
	journal = {Numerical Mathematics: Theory, Methods and Applications},
	volume = {3},
	number = {3},
	year = {2010},
	month = {2010-00},
	pages = {64-82},
	publisher = {Golbal Science Press},
	address = {Beijing},
	author = {Luc Giraud and Azzam Haidar and Yousef Saad},
	editor = {C. Zhiming}
}
