@article{10_4153_CMB_1971_008_8,
     author = {Hoo, C. S.},
     title = {The {Weak} {Weak} {Category} of a {Space}},
     journal = {Canadian mathematical bulletin},
     pages = {49--51},
     year = {1971},
     volume = {14},
     number = {1},
     doi = {10.4153/CMB-1971-008-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-008-8/}
}