@misc{indiciaeb6825bcb21f6,
  title = {Positional information revisited.},
  author = {L Wolpert},
  year = {1989},
  doi = {10.1242/dev.107.supplement.3},
  url = {https://pubmed.ncbi.nlm.nih.gov/2699855/},
  note = {Source identifier: 2699855}
}