@misc{indiciae649486f2722f,
  title = {Why do migrating birds fly along coastlines?},
  author = {T Alerstam and S G Pettersson},
  year = {1977},
  doi = {10.1016/0022-5193(77)90016-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/875399/},
  note = {Source identifier: 875399}
}