1. Ehrlich P. Das Sauerstoff-Bedürfniss des Organismus: eine farbenanalytische Studie. Hirschwald, Berlin; 1885
2. Sharma HS, Dey PK. Impairment of blood-brain barrier (BBB) in rat by immobilization stress: role of serotonin (5-HT). Indian J Physiol Pharmacol 1981 Apr–Jun; 25(2):111–122
3. Sharma HS, Dey PK. Role of 5-HT on increased permeability of blood-brain barrier under heat stress. Indian J Physiol Pharmacol 1984 Oct–Dec; 28(4):259–267
4. Sharma HS. Blood-Brain Barrier in Stress, Ph D Thesis, Banaras Hindu University, Varanasi, India, 1982; pp. 1–85
5. Sharma HS, Dey PK. Influence of long-term immobilization stress on regional blood-brain barrier permeability, cerebral blood flow and 5-HT level in conscious normotensive young rats. J Neurol Sci 1986; 72:61–76