Yatskievych, Tatiana A; Pascoe, Sharon; Antin, Parker B (1999). "Expression of the homeobox gene Hex during early stages of chick embryo development". Mechanisms of Development. 80 (1): 107–9. doi:10.1016/S0925-4773(98)00204-4. PMID10096068. S2CID16058351.
Izpisúa-Belmonte, Juan Carlos; De Robertis, Eddy M.; Storey, Kate G.; Stern, Claudio D. (1993). "The homeobox gene goosecoid and the origin of organizer cells in the early chick blastoderm". Cell. 74 (4): 645–59. doi:10.1016/0092-8674(93)90512-O. PMID7916659. S2CID40144648.
Callebaut, Marc; Van Nueten, Emmy; Harrisson, Fernand; Bortier, Hilde (2007). "Mosaic versus regulation development in avian blastoderms depends on the spatial distribution of Rauber's sickle material". Journal of Morphology. 268 (7): 614–23. doi:10.1002/jmor.10528. PMID17450588. S2CID19984453.
Callebaut, M; Van Nueten, E; Bortier, H; Harrisson, E (2002). "Avian sickle endoblast induces gastrulation or neurulation in the isolated area centralis or isolated anti-sickle region respectively". European Journal of Morphology. 40 (1): 1–13. doi:10.1076/ejom.40.1.1.13955. PMID12959343.
Yatskievych, Tatiana A; Pascoe, Sharon; Antin, Parker B (1999). "Expression of the homeobox gene Hex during early stages of chick embryo development". Mechanisms of Development. 80 (1): 107–9. doi:10.1016/S0925-4773(98)00204-4. PMID10096068. S2CID16058351.
Izpisúa-Belmonte, Juan Carlos; De Robertis, Eddy M.; Storey, Kate G.; Stern, Claudio D. (1993). "The homeobox gene goosecoid and the origin of organizer cells in the early chick blastoderm". Cell. 74 (4): 645–59. doi:10.1016/0092-8674(93)90512-O. PMID7916659. S2CID40144648.
Callebaut, M; Van Nueten, E (1994). "Rauber's (Koller's) sickle: The early gastrulation organizer of the avian blastoderm". European Journal of Morphology. 32 (1): 35–48. PMID8086267.
Callebaut, Marc; Van Nueten, Emmy; Harrisson, Fernand; Bortier, Hilde (2007). "Mosaic versus regulation development in avian blastoderms depends on the spatial distribution of Rauber's sickle material". Journal of Morphology. 268 (7): 614–23. doi:10.1002/jmor.10528. PMID17450588. S2CID19984453.
Callebaut, M; Van Nueten, E; Bortier, H; Harrisson, E (2002). "Avian sickle endoblast induces gastrulation or neurulation in the isolated area centralis or isolated anti-sickle region respectively". European Journal of Morphology. 40 (1): 1–13. doi:10.1076/ejom.40.1.1.13955. PMID12959343.
Yatskievych, Tatiana A; Pascoe, Sharon; Antin, Parker B (1999). "Expression of the homeobox gene Hex during early stages of chick embryo development". Mechanisms of Development. 80 (1): 107–9. doi:10.1016/S0925-4773(98)00204-4. PMID10096068. S2CID16058351.
Izpisúa-Belmonte, Juan Carlos; De Robertis, Eddy M.; Storey, Kate G.; Stern, Claudio D. (1993). "The homeobox gene goosecoid and the origin of organizer cells in the early chick blastoderm". Cell. 74 (4): 645–59. doi:10.1016/0092-8674(93)90512-O. PMID7916659. S2CID40144648.
Callebaut, Marc; Van Nueten, Emmy; Harrisson, Fernand; Bortier, Hilde (2007). "Mosaic versus regulation development in avian blastoderms depends on the spatial distribution of Rauber's sickle material". Journal of Morphology. 268 (7): 614–23. doi:10.1002/jmor.10528. PMID17450588. S2CID19984453.