Claus, G. and H. J. Kutzner; “Physiology and Kinetics of Autotrophic Denitrification Thiobacillus denitrificans,” Appl. Microbiol. Biotechnot., 22, 283–288 (1985)
Cork, D. J. and S. Ma; “Acid-gas Bioconversion Favors Sulfur Production,” Biotechnol. Bioeng., Symposium No. 12, 285–290 (1982)
Ehrlich, II. L.; Geomicrobiology, 3rd ed., pp. 508–577, Marcel Dekker, New York, USA (1996)
Gustafsson, L.; “Determination of Ultramicro Amounts of Sulphate as Methylene Blue: the Color Reaction,” Talanta, 4, 227–235 (1960)