@article {14124,
	title = {Approximate Schur Complement Preconditioners on Serial and Parallel Computers},
	journal = {SIAM Journal on Scientific and Statistical ComputingSIAM J. Sci. and Stat. Comput.},
	volume = {10},
	year = {1989},
	month = {1989///},
	pages = {581 - 581},
	isbn = {01965204},
	doi = {10.1137/0910037},
	url = {http://link.aip.org/link/SJOCE3/v10/i3/p581/s1\&Agg=doi},
	author = {Elman, Howard}
}
