(1)
Sakata, E. E.; Yasuda, P. H.; Romero, E. C.; Silva, M. V.; Lomar, A. V. Serovars of Leptospira Interrogans Isolated from Human Leptospirosis in São Paulo, Brazil . Rev. Inst. Med. Trop. São Paulo 1992, 34 (3), 217-221.