@article{oai:nipr.repo.nii.ac.jp:00010021,
 author = {Goto-Azuma, Kumiko and Goto-Azuma, Kumiko},
 issue = {3},
 journal = {Polar science, Polar science},
 month = {Sep},
 title = {Obituary for Sigfus Johan Johnsen, 1940-2013},
 volume = {8},
 year = {2014}
}