Massin M., Withofs N., Maeyns K., Ravet F., Gérard P. (2001) Normal ranges for the variability in heart rate in young infants while sleeping. Cardiol Young 11:619-625.
Shiomi T., Guilleminault C., Sasanabe R., Hirota I., Maekawa M., Kobayashi T. (1996) Augmented VLF component of heart rate variability during obstructive sleep apnea. Sleep 19:370-377.
Aljadeff G., Gozal D., Schechtman V.L., Burrell B., Harper R.M., Ward S.L. (1997) Heart rate variability in children with obstructive sleep apnea. Sleep 20:151-157.