@article{SchelthoffBasermannReichel2007,
  author    = {Christof Schelthoff and Achim Basermann and Bj{\"o}rn Reichel},
  title     = {Preconditioned CG methods for sparse matrices on massively parallel machines / Basermann, A. ; Reichel, B. ; Schelthoff, C.},
  journal   = {Parallel Computing. 23 (1997), H. 3},
  pages     = {381 -- 398},
  year      = {2007},
}