@misc{indiciae550eea016c96,
  title = {A singular abstract cauchy problem.},
  author = {J A Donaldson},
  year = {1970},
  doi = {10.1073/pnas.66.2.269},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591839/},
  note = {Source identifier: 16591839}
}