@article(a._assessing_2018,
	title = {Assessing Gaps via Bathymetric Sounding Density},
	journal = {The International Hydrographic Review},
	volume = {20},
	year = {2018},
	url = {https://ihr.iho.int/articles/assessing-gaps-via-bathymetric-sounding-density/},
	author = {A. Armstrong and J. Jencks and P. Johnson and M. Westington and M. Sutherland and J. Varner},
)