Rowcliffe, J.M., Carbone, C., Jansen, P.A., Kays, R.W., Kranstauber, B., 2011. Quantifying the Sensitivity of Camera Traps: An Adapted Distance Sampling Approach. Methods in Ecology and Evolution 27, 464-476. doi:10.1111/j.2041-210X.2011.00094.x