1. Sigel, A. and Sigel, H., eds. ( 2002) Molybdenum and Tungsten. Their Roles in Biological Processes. Marcel Dekker, New York.
2. The biogeochemistry of molybdenum and tungsten;Stiefel;Met. Ions Biol. Syst.,2002
3. Molybdenum metabolism and requirements in humans;Turnlund;Met. Ions Biol. Syst.,2002
4. Molybdenum cofactor biosynthesis and molybdenum enzymes;Schwarz;Annu. Rev. Plant Biol.,2006
5. Molybdenum-containing hydroxylases;Hille;Arch. Biochem. Biophys.,2005