1. Investigation of a natural focus of spotted fever group rickettsiae in Jinghe County;Ai C. X.;Xinjiang. Chin. J. Epidemiol.,1979
2. Non-pathogenic rickettsias related to the spotted fever group isolated from ticks, Derniacentor iariabilis and Dermacentor andersoni from eastern Montana;Bell E. J.;J. Immunol.,1963
3. Immunologic relationships among the spotted fever group of rickettsias determined by toxin neutralization tests in mice with convalescent animal serums;Bell E. J.;J. Immunol.,1960
4. Hemolymph test: a technique for detection of rickettsiae in ticks;Burgdorfer W.;Am. J. Trop. Med. Hyg.,1970
5. Burgdorfer W. S. F. Hayes and A. J. Mavros. 1981. Nonpathogenic rickettsiae in Dermacentor andersoni: a limiting factor for the distribution of Rickettsia rickettsii p. 585-594. In W. Burgdorfer and R. L. Anacker (ed.) Rickettsiae and rickettsial diseases. Academic Press Inc. New York.