@article {14147,
	title = {The (new) Yale sparse matrix package},
	journal = {Elliptic problem solvers II},
	year = {1983},
	month = {1983///},
	pages = {45 - 52},
	author = {Eisenstat, S. C and Elman, Howard and Schultz, M. H and Sherman, A. H}
}
