Frontal-Artery Sign-A Bedside Indicator of Internal Carotid Occlusive DiseaseNEJM 288:1008, 1973, 289:161973., Caplan,L.R., 1973
Unilateral Arcus Corneae Senilis & Carotid Occlusive DiseaseJAMA 233:450, Bagla,S.K.,et al, 1975