● Tarrand JJ,Krieg NR,Döbereiner J (1978). A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov.
Can. J. Microbiol. 24, 967-80.
● Beijerinck MW (1925). Über ein Spirillum, welches freien Stickstoff binden kann.
Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. II 63, 353-359.
● (1979). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List n° 2.
Int. J. Syst. Bacteriol. 29, 79-80.