@article{10_4153_CMB_1999_002_2,
     author = {Brendle, J\"org},
     title = {Dow{\textquoteright}s {Principle} and {Q-Sets}},
     journal = {Canadian mathematical bulletin},
     pages = {13--24},
     year = {1999},
     volume = {42},
     number = {1},
     doi = {10.4153/CMB-1999-002-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-002-2/}
}