1. JA Brown, S Harris and SM Timmins, Estimating the maximum interval between repeat surveys. Austral Ecology 29 (2004) 631-636
2. ST Buckland, DR Anderson, KP Burnham, JL Laake, DL Borchers and L Thomas, Advanced Distance Sampling: Estimating Abundance of Biological Populations. Oxford, UK: Oxford University Press (2004).
3. KP Burnham, DR Anderson and JL Laake, Estimation of density from line transect sampling of biological populations. Wildlife Monograph 72 (1980) 202
4. H Caswell, Matrix Population Models: Construction Analysis and Interpretation. Sunderland, MA: Sinauer Associates (2001).
5. Cooper DC, Frost JR and Robe RQ (2003) Compatibility of land SAR procedures with search theory. Technical Report DTCG32-02-F-000032. Department of Homeland Security, U.S. Coast Guard Operations, Washington, DC, 183 pp