1. Short‐term reproducibility and variability of the pupillographic sleepiness test. Issue 6 (20th May 2015) Authors: Wilhelm, Barbara; Bittner, Evelyn; Hofmann, Anna; Koerner, Andreas; Peters, Tobias; Lüdtke, Holger; Wilhelm, Helmut; Gurri, Francisco D.; Ortega‐Muñoz, Allan Journal: American journal of human biology Issue: Volume 27:Issue 6(2015:Nov./Dec.) Page Start: 862 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. The effect of caffeine on spontaneous pupillary oscillations. (January 2014) Authors: Wilhelm, Barbara; Stuiber, Gitta; Lüdtke, Holger; Wilhelm, Helmut Journal: Ophthalmic and physiological optics Issue: Volume 34:Number 1(2014:Jan.) Page Start: 73 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗