@misc{indiciaee436deb2a06f,
  title = {Export certification.},
  author = {P A Grime and A D Hilbery and P T Naylor and D M Morgan},
  year = {1988},
  doi = {10.1136/vr.123.19.500},
  url = {https://pubmed.ncbi.nlm.nih.gov/3201702/},
  note = {Source identifier: 3201702}
}