@article{10_4153_CJM_2000_049_9,
     author = {Elliott, George A. and Villadsen, Jesper},
     title = {Perforated {Ordered} {K0-Groups}},
     journal = {Canadian journal of mathematics},
     pages = {1164--1191},
     year = {2000},
     volume = {52},
     number = {6},
     doi = {10.4153/CJM-2000-049-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2000-049-9/}
}