@misc{indiciae2016ea30f7a4,
  title = {Generalized Du Fort-Frankel methods for parabolic initial-boundary value problems},
  author = {Gottlieb, D. and Gustafsson, B.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760039983},
  note = {Source identifier: 19760039983}
}