Nüsslein-Volhard, C Research Group Colour Pattern Formation, Max Planck Institute for Developmental Biology, Max Planck Society;
https://www.leopoldina.org/uploads/tx_leopublication/NAL_Nr419_Gesamt_Internet.pdf (Publisher version)
Nüsslein-Volhard, C. (2017). Gradient Models in Developmental Biology: A Historical Perspective. Stuttgart: Wiss. Verl.-Ges.