Xia Wentao, Xie Hongjie, and Ke Changqing. “Assessing Trend and Variation of Arctic Sea-Ice Extent During 1979-2012 from a Latitude Perspective of Ice Edge”. Polar Research 330 (September 11, 2014). Accessed March 28, 2024. https://polarresearch.net/index.php/polar/article/view/3165.