References
- Australian Hydrographic Office . 1999 . S‐57 ‐Zones of Confidence — Assessment Chart.
- International Hydrographic Organisation . 2000 . Special Publication No. 57, (S‐57) Transfer Standard for Digital Hydrographie Data, Edition 3.1.
- Johnson . 2004 . ZOCMAN Cometh or On the Application of Zones of Confidence in the Australian Hydrographie Service , Royal Australian Navy .
- Land Information New Zealand . 2004 . Improving Hydrographie Information — Zones of Confidence Contract INFO 0406‐ZOC , Wellington : Land Information New Zealand .