1. Developmental aspects of the neural control of breathing;Lawson,1992
2. Developmental anatomy and physiology of the respiratory system;Gaultier,1999
3. Observations of fetal breathing movements transmitted through maternal abdominal wall;Boddy;Lancet,1972
4. Fetal breathing movements;Harding,1991
5. The role of the central nervous system in perinatal respiration;Herrington;Pediatrics,1971