Falk E.S., Guo W., Paukert A.N., Matter J.M., Mervine E.M., Kelemen P.B..  2016.  Controls on the stable isotope compositions of travertine from hyperalkaline springs in Oman: Insights from clumped isotope measurements. Geochimica et Cosmochimica Acta. 192:1-28.