PikeD. G., GunnlaugssonT., DesportesG., MikkelsenB., VikingssonG. A., and BlochD. “Estimates of the Relative Abundance of Long-Finned Pilot Whales (Globicephala Melas) in the Northeast Atlantic from 1987 to 2015 Indicate No Long-Term Trends”. NAMMCO Scientific Publications, Vol. 11, Feb. 2019, doi:10.7557/3.4643.