1. Local autonomy of gastrulation movements after dorsal lip removal in two anuran amphibians;Cooke;J. Embryol. Exp. Morphol,1975
2. Morphogenetic movements in Salmo gairdneri Richardson;Ballard;J. Exp. Zool,1973
3. A new fate map for Salmo gairdneri;Ballard;J. Exp. Zool,1973
4. Problems of gastrulation: Real and verbal;Ballard;Bioscience,1976
5. I. Beiträge zur Kenntniss der Entwicklungsgeschichte und der Anatomie der Gymnophionen;Brauer;Zool. Jahrb,1897