Pogson, R. E., R. A. L. Osborne, D. M. Colchester, and D. I. Cendón. “Sulfate and Phosphate Speleothems at Jenolan Caves, New South Wales, Australia”. Acta Carsologica, vol. 40, no. 2, Sept. 2011, doi:10.3986/ac.v40i2.9.