Obu , J., H. Lantuit, M. Fritz, W. H. Pollard, T. Sachs, and F. Günther. “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.