1. Gavrilov, P. O. , Bzhevskaya, A. N. , Rementsova, M. M. , Usmanova, F. I. , and Postricheva, O. C. , Epidemiology of the disease caused by B. ovis, Vet. Moscow, 7, 55, 1972
2. cited by Meyer, M. E., in Handbuch der bakteriellen Infektionen bei Tieren, Vol. 4, Blobel, H. and Schliesser, T. , Eds., VEB Gustav Fischer Verlag, Jena, 1982, 309.