K. L. Williams, R. Stein, T. Wen, R. E. Francois;
Determination of elastic moduli of sea ice, Proceedings of MTS/IEEE OCEANS'89 Conference,
pp. 1231 - 1235, September 1989.
Ronald Stein, Elbert A. Pence;
An Expendable Acoustic Transponder, Proceedings of MTS/IEEE OCEANS'81 Conference,
pp. 387 - 391, September 1981.