Leaper, R., Burt, L., Gillespie, D. and Macleod, K. 2023. Comparisons of measured and estimated distances and angles from sightings surveys. J. Cetacean Res. Manage. 11, 3 (Feb. 2023), 229–237. DOI:https://doi.org/10.47536/jcrm.v11i3.602.