@article{11150,
  author = {Xing Cai and Bj{\o}rn Nielsen and Aslak Tveito},
  title = {A Note on the Efficiency of the Conjugate Gradient Method for a Class of Time-Dependent Problems},
  year = {2007},
  journal = {Numerical Linear Algebra with Applications},
  volume = {14},
  number = {5},
  pages = {459-467},
}