1. Intermittent Horners syndrome on alternate sides: a hint for locating spinal lesions.;Hopf;J Neurol,1980
2. Intermittent Horners syndrome: recurrent, alternate Horners syndrome in cervical cord injury.;Zur;Ann Ophthalmol,1975
3. Painful Claude Bernard Horner syndrome: apropos of a painless carotid artery dissection (in French).;Ameline-Audelan;J Fr Ophthalmol,1998
4. Carotid artery dissection presenting as a painless Horners syndrome in a pilot: fit to fly?;Venketasubramanian;Aviat Space Environ Med,1998
5. Cluster headache sine headache: case report.;Salvesen;Neurology,2000