1. Heymann MA (1989) Fetal and neonatal circulations. In: Adams FH, Emmanouillides GC, Riemenschneider TA (eds) Heart disease in infants, children, and adolescents. Williams & Wilkins, Baltimore, pp 24–35
2. Fouron JC, Zarelli M, Drblik SP et al (1994) Lessard M. Normal flow velocity profile through the fetal aortic isthmus. Am J Cardiol 74:483–486
3. Fouron JC (2003) The unrecognized physiological and clinical significance of the fetal aortic isthmus. Ultrasound Obstet Gynecol 22(5):441–447
4. Choi JY, Noh CI, Yun YS (1991) Study on Doppler waveforms from the fetal cardiovascular system. Fetal Diagn Ther 6:74–83
5. Sharland GK, Chan KY, Allan LD (1994) Coarctation of the aorta: difficulties in prenatal diagnosis. Br Heart J 71:70–75