IngelstedtS.: Studies on the Conditioning of Air in the Respiratory Tract. Acta Oto-laryngol.Suppl. 131, 1956.
2.
IngelstedtS.ToremalmN. G.: Aerodynamics within the Larynx and Trachea. Acta-Oto-laryngol.Suppl. 158, 1–12, 1960.
3.
KochH. J.AllanderC.IngelstedtS.ToremalmN. G.: A Method for Humidifying Inspired Air in Post-tracheotomy Care. Annals of Otology, Rhinology and Laryngology67:991–1004, 1958.
4.
ToremalmN. G.: A Heat-and-Moisture Exchanger for Post-tracheotomy Care. An Experimental Study. Acta Oto-laryngol.51, fasc. 6, 1960.