@misc{indiciae21b299017d87,
  title = {Pattern selection and tip perturbations in the Saffman-Taylor problem},
  author = {Hong, D. C. and Langer, J. S.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880025812},
  note = {Source identifier: 19880025812}
}