Christopher M. Smith, John J. Leonard, Hans Jacob S. Feder; Making difficult decisions autonomously: The impact of integrated mapping and navigation, Proceedings of 1998 Symposium on Autonomous Underwater Vehicle Technology, pp. 123 - 132, June 1998.

H. J. S. Feder, J. J. Leonard, C. M. Smith; Adaptive sensing for terrain aided navigation, Proceedings of IEEE OCEANS'98 Conference, pp. 336 - 341, September 1998.