Assessing scleractinian corals as recorders for paleo-pH: Empirical calibration and vital effects, Honisch, B.; Hemming, N. G.; Grottoli, A. G.; Amat, A.; Hanson, G. N.; Buma, J. , Geochimica Et Cosmochimica Acta, Sep, Volume 68, Issue 18, p.3675-3685, (2004), DOI 10.1016/j.gca.2004.03.0026 Abstract