@article{10_4153_CJM_1989_043_0,
     author = {Conner, P. E. and Hurrelbrink, Jurgen},
     title = {The {4-Rank} of {K} 2(0)},
     journal = {Canadian journal of mathematics},
     pages = {932--960},
     year = {1989},
     volume = {41},
     number = {5},
     doi = {10.4153/CJM-1989-043-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-043-0/}
}