TY  - RPRT
TI  - Models for positional information and positional differentiation.
AU  - A Babloyantz
AU  - J Hiernaux
PY  - 1974
DO  - 10.1073/pnas.71.4.1530
UR  - https://pubmed.ncbi.nlm.nih.gov/4524656/
ID  - 4524656
ER  -