Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Axel Klawonn. An Optimal Preconditioner for a Class of Saddle Point Problems with a Penalty Term. SIAM J. Scientific Computing, 19(2):540-552, 1998. [doi]