@misc{indiciae6fbe299f8816,
  title = {Models for positional information and positional differentiation.},
  author = {A Babloyantz and J Hiernaux},
  year = {1974},
  doi = {10.1073/pnas.71.4.1530},
  url = {https://pubmed.ncbi.nlm.nih.gov/4524656/},
  note = {Source identifier: 4524656}
}