@article{10_4153_CJM_1969_081_2,
     author = {Hoo, C. S.},
     title = {Conilpotency and {Weak} {Category}},
     journal = {Canadian journal of mathematics},
     pages = {730--734},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-081-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-081-2/}
}