@article{10_4153_CJM_2004_003_9,
     author = {Harper, Malcolm},
     title = {Z[] is {Euclidean}},
     journal = {Canadian journal of mathematics},
     pages = {55--70},
     year = {2004},
     volume = {56},
     number = {1},
     doi = {10.4153/CJM-2004-003-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-003-9/}
}