@article{10_4064_fm177_1_5,
     author = {Yasushi Hirata and Nobuyuki Kemoto},
     title = {Separating by $G_{\delta }$-sets in finite powers of $\omega _1$},
     journal = {Fundamenta Mathematicae},
     pages = {83--94},
     publisher = {mathdoc},
     volume = {177},
     number = {1},
     year = {2003},
     doi = {10.4064/fm177-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm177-1-5/}
}