Hajek. Pathologie und Therapie der entzündilichen Erkrankungen der Nebenhöhlen der Nase, Wien, 1890, p. 167 et seq.
2.
Hartmann. Atlas der Anatomie der Stirnhöhle, mit Erläuterndem Texte und bemerkungen Ueber die Behandlung der Stirnhöhleneiterung, Wiesbaden, 1900.
3.
Collier. Anatomy of the Frontal Sinus; Lancet, June 12, 1897.
4.
FehleisenF.. Diagnosis and Treatment of Affections of the Frontal Sinus; Medical Record, August 7, 1897.
5.
Blessig. Empyema of the Frontal Sinus: Perforation of the Orbit and Cranial Cavity, St. Petersburg Med. Woch., 1897, No. 26.
6.
Milligan-Baron. Remarks on the Necessity of Having a Large Opening into the Nose, Journal of Laryngology, June, 1897, pp. 300, 301.
7.
Killian. Abstract on Intercommunicating Frontal Sinuses, Journal of Laryngology, December, 1897.
8.
Luc. Journal of Laryngology, December, 1897.
9.
Mermod. Ann. des Mal. de l'Oreille. April, 1896, citation, Journ. Laryngol., December, 1896.
10.
Tilley. Investigation of Frontal Sinus in 120 Skulls, Lancet, September 26, 1896.
11.
Spiess. Abstract on Diagnosis and Endonasal Treatment of Empyema of Frontal Sinus, Journal of Laryngology, November 1899. Same with X-ray Illustration. Laryngoscope, December, 1899, p. 377.
12.
FrontalisEmpyema Sinus, Annals of Otology, Rhinology and Laryngology, May, 1899, p. 172.
13.
Journal of Laryngology, April, 1901, p. 195 et seq.
14.
Tilley. Ibid., October, 1901.
15.
Bryan. Trans. Sect. on Laryngology and Otology, American Medical Association, 1897, p. 86. et seq.
16.
Zuckerkandl. Anatomie der Nasenhöhle. Wien1893, Bd. i.
17.
Röpke. Archiv für Laryngologie und Rhinologie.Bd. viii., Heft 2.
18.
Myles. American Text-book of Diseases of the Eye, Ear, Nose and Throat, p. 981.
19.
Head-Andrews. Year-book of the Nose and Throat, 1900. Articles, Frontal Sinus, p. 39–44.
20.
Diagnosis and Treatment of Chronic Empyema of Frontal Sinus, Journal of Laryngology, September, 1899, p. 469 et seq.
21.
Jansen. Zur Eröffnung der Nebenhöhlen der Nase. Archiv. f. Laryngologie, Bd. i, p. 144 et seq.
22.
Ingals. Journal of the American Medical Association, July 27, 1901.
23.
Wells. Sounding the Frontal Sinus, Laryngoscope, April, 1901.