@misc{indiciae31d55febb903,
  title = {Iterative methods for mixed finite element equations},
  author = {Nakazawa, S. and Nagtegaal, J. C. and Zienkiewicz, O. C.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19860049723},
  note = {Source identifier: 19860049723}
}