1. Embryology of exomphalos and allied malformations;Duhammel;Arch Dis Child,1963
2. Morphogenisis pathologique;Duhammel,1966
3. Developmental stages in human embryos;O'Rahilly;Carnegie Inst of Wash Pub,1973
4. Developmental horizons in human embryos. Description of age group XI, 13 to 20 somites and age group XII, 21 to 29 somites Carnigie Inst Wash Pub 541;Streeter;Contrib Embryol,1942
5. Development of the limbs, body wall and back in man;Bardeen;Am J Anat,1901