1. Anagnostopoulos, D. I., Gortvai, P., 1973: Intracranial subdural abscess. Brit. J. Surg. 60, 50–52.
2. Anderson, F. M., 1947: Subdural empyema secondary to frontal sinusitis. Review of clinical features and report of three cases. Ann. Otol. Rhinol. Laryngol. 56, 5–17.
3. Van Alphen, H. A. M., Dreissen, J. J. R. 1976: Brain abscess and subdural empyema. Factors influencing mortality and results of various surgical techniques. J. Neurol. Neurosurg. Psychiat. 39, 481–490.
4. Bannister, G., Williams, B., Smith, S., 1981: Treatment of subdural empyema. J. Neurosurg. 55, 82–88.
5. Beeden, A. G., Marsden, C. D., Meadows, J. C., Michael, W. F., 1969: Intracranial complications of middle ear disease and mastoid surgery. J. Neurol. Sci. 9, 261–272.