Literature

Hiby, L. & Lovell, P., 1998. Using aircraft in tandem formation to estimate abundance of harbour porpoise. Biometrics , 54(4), pp.1280-1289. Available at: https://www.jstor.org/stable/2533658?seq=1.

Mcconnell, B.J. et al., 1999. Movements and foraging areas of grey seals in the North Sea. Journal of Applied Ecology, 36(4), pp.573 - 590. Available at: https://besjournals.onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2664.1999.00429.x.

Mcconnell, B.J. et al., 1999. Movements and foraging areas of grey seals in the North Sea. Journal of Applied Ecology, 36, pp.573-590. Available at: https://besjournals.onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2664.1999.00429.x.