@article{10_4153_CJM_1995_043_3,
     author = {Macdonald, Gordon W.},
     title = {Distance {From} {Projections} to {Nilpotents}},
     journal = {Canadian journal of mathematics},
     pages = {841--851},
     year = {1995},
     volume = {47},
     number = {4},
     doi = {10.4153/CJM-1995-043-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1995-043-3/}
}