by Eriksen, C.C., Osse, T.J., Light, R.D., Wen, T., Lehman, T.W., Sabin, P.L., Ballard, J.W., Chiodi, A.M.
Published in IEEE journal of oceanic engineering (01.10.2001)

by Charlat, S., Ballard, J. W. O., Merçot, H.
Published in Journal of evolutionary biology (01.03.2004)

by Goodman, J.M., Ballard, J.W., Sharp, E.
Published in Proceedings of MILCOM '96 IEEE Military Communications Conference (1996)

by Goodman, J., Ballard, J.W., Sharp, E.
Published in Proceedings of MILCOM '95 (1995)