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2. Emergency Management Australia (EMA): Australian Emergency Manuals Series, Part III, Emergency Management Practice, Volume 3 — Guidelines, Guide 4, Flood Preparedness, pp30-34 (1999).
3. Opper S.: Emergency Planning for The Hawkesbury-Nepean valley. In: 40th Annual Conference of the NSW Floodplain Management Authorities (1999).
4. New South Wales State Emergency Service (SES): Hawkesbury-Nepean Flood Emergency State Plan (2005).
5. S. Opper, The Application of Timelines to Evacuation Planning. In: 44th Annual Conference of the NSW Floodplain Management Authorities (2004).