1. Phosphate oxygen isotopic evidence for a temperate and biologically active Archaean ocean;Blake;Nature,2010
2. 18O enrichment in phosphorus pools extracted from soybean leaves;Pfahler;New Phytol.,2013
3. A method for the analysis of the delta O-18 of inorganic phosphate extracted from soils with HCl;Tamburini;Eur. J. Soil Sci.,2010
4. Liang, Y.M., Oxygen isotope studies of biogeochemical cycling of phosphorus, New Haven, Connecticut, Ph.D. Thesis, Yale University. (2005) 238.
5. A rapid and precise method of oxygen isotope analysis of biogenic phosphate;O'Neil;Isr. J. Earth Sci.,1994