1. Positional information and the spatial pattern of cellular differentiation
2. Cellular Basis of Morphogenesis (CIBA Foundation Symposium 144);Struhl,1989
3. The Molecular Basis of Positional Signalling (Development Supplment);St. Johnston,1989
4. Cellular Basis of Morphogenesis (CIBA Foundation Symposium 144);Nüsslein-Volhard,1989
5. The X, Y, Z of head development