1. Gilbert SF. Early vertebrate development neuralation and ectoderm. In: Gilbert SF, editor. Developmental biology, 2nd edn., Chp. 5. Sunderland, MA: Sinauer Associates, 1988.
2. Bronner-Fraser M. Neural crest cell migration in the developing embryo. FASEB J, 1994;8(10):699–706.
3. LeDougrin N. The neural crest, New York: Cambridge University Press, 1982.
4. Jones KL. DiGeorge sequence primary defect – fourth brachial arch and derivatives of 3rd and 4th pharyngeal pouches. In: Jones KL, editor. Smith's recognizable patterns of human malformation. Philadelphia, PA: Saunders, 1988:556.
5. The DiGeorge anomaly as a developmental field defect;Lammer;Am J Med Genet (Suppl.),1986