Knierim, K. J., Pollock, E. and Hays, P. D. (2013) “Using isotopes of dissolved inorganic carbon species and water to separate sources of recharge in a cave spring, northwestern Arkansas, USA Blowing Spring Cave”, Acta Carsologica. Ljubljana, Slovenija, 42(2-3). doi: 10.3986/ac.v42i2-3.667.