Freeman, S. E., Freeman, L. A., Lammers, M. O., and Buckingham, M. J. “Spatial characterization of coral reef sounds in the northwestern Hawaiian Islands using an Bi-linear hydrophone array”, J. Acoust. Soc. Am., 137, 30 (2015)

Freeman, S. E., Rohwer, F. L., Spain, G. L., Friedlander, A. M., Gregg, A. K., Sandin, S. A. and Buckingham, M. J. “The origins of ambient biological sound from coral reef ecosystems in the Line Islands archipelago” J. Acoust. Soc. of Am., 135, 1775-1788 (2014)

Freeman, S. E., D’Spain, G. L., Lynch, S. D., Stephen, R. A., Heaney, K. D., Murray, J. J., Baggeroer, A. B., Worcester, P. F., Dziechiuch, M. A., Mercer, J. A. (2013) “Estimating the horizontal and vertical direction-of-arrival of water-borne seismic signals in the northern Philippine Sea,” J. Acoust. Soc. Am. 134(4) Pt. 2, pp. 3282-3298.