@misc{indiciaede71007a9d2a,
  title = {Solution of elliptic partial differential equations by fast Poisson solvers using a local relaxation factor. 1: One-step method},
  author = {Chang, S. C.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860019189},
  note = {Source identifier: 19860019189}
}