1. Developmental stages in human embryos;O'Rahilly,1987
2. The house mouse: atlas of embryonic development;Theiler,1989
3. A series of normal stages in the development of the chick embryo. [First printed in 1951.];Hamburger;Dev Dyn,1992
4. Embryonic heart induction;Foley;Ann N Y Acad Sci,2006
5. Heart formation and the heart field in amphibian embryos;Mohun,1999