John A. Halsema

John W. Irza, John A. Halsema; A low frequency high resolution sonar for AUV's, Proceedings of 1992 Symposium on Autonomous Underwater Vehicle Technology, pp. 215 - 218, June 1992.

John W. Irza, John A. Halsema; A wideband parametric sonar for imaging and classification, Proceedings of the Seventh International Symposium on Unmanned Untethered Submersible Technology, vol. 7, pp. 244 - 252, September 1991.