McInnes, Brent I. A.; Jannene S. McBride, Noreen J. Evans, David D. Lambert and Anita S. Andrew. Osmium Isotope Constraints on Ore Metal Recycling in Subduction Zones (англ.) // Science : journal. — AAAS, 1999. — 15 October (vol. 286, no. 5439). — P. 512—516. — doi:10.1126/science.286.5439.512.