J Schäfer

[Monitoring of sleep apnea syndromes].

J Schäfer, 1990, Biomedizinische Technik. Biomedical engineering.

Digital signal analysis of snoring sounds in children.

J Schäfer, J. Schäfer, W Pirsig, 1990, International journal of pediatric otorhinolaryngology.

Posture-dependent change of tracheal sounds at standardized flows in patients with obstructive sleep apnea.

J Schäfer, G R Wodicka, H. Pasterkamp, 1996, Chest.