1. Döbereiner, J., Tokarnia, C. H., Costa, J. D. D. da & Dayrell, M. de. S. (1970) XII Congr. liras. Med. Vet. Porto Allegre, Aug. 23rd-29th (Pesq. aowpec. bras., in press)
2. Mineral Studies with Isotopes in Domestic Animals;Sansom,1971
3. “Enteque Seco”, Calcification and Wasting in Grazing Animals in the Argentine