TY  - RPRT
TI  - BMP signalling: synergy and feedback create a step gradient.
AU  - Hilary L Ashe
PY  - 2005
DO  - 10.1016/j.cub.2005.05.003
UR  - https://pubmed.ncbi.nlm.nih.gov/15916937/
ID  - 15916937
ER  -