Sinapi, L., A. Vassallo, and R. Gargiulo. “External Alignment Between Two Beacons at Different Elevation for Use in Bathymetric Operations”. The International Hydrographic Review 4, no. 2 (June 6, 2003). Accessed September 26, 2024. https://journals.lib.unb.ca/index.php/ihr/article/view/20621.