1. Bollettino di Geodesia e Scienze Affini, Anno LIII - N.1., 1994;V Achilli,1994
2. ACIC TR Nr. 80;ACIC,1957
3. Special Publication No. 68;OS Adams,1990
4. Special Publication No. 67;OS Adams,1949
5. Admiralty, 1965. Manual of Hydrographie Surveying, Volume One. Hydrographer of The Navy. HMSO, London.