Obu J., Lantuit H., Fritz M., Pollard W. H., Sachs T., and Günther F. “Relation Between Planimetric and Volumetric Measurements of Permafrost Coast Erosion: A Case Study from Herschel Island, Western Canadian Arctic”. Polar Research, vol. 35, Sept. 2016, doi:10.3402/polar.v35.30313.