Journal Article
                        
                        Walter, H, H  Danker-Hopfe, D  Eberhardt, M  Tegeler, M K Das, S K Bhattacharya, P N Sahu, K C Malhotra, and B N Mukherjee.  
"Investigations on the variability of blood group polymorphisms among sixteen tribal populations from Orissa, Madhya Pradesh and Maharashtra, India.." Zeitschrift fur Morphologie und Anthropologie 79, no. 1 (1992): 69-94.