@article{10_4064_fm_91_2_123_131,
     author = {K. Alster and T. Przymusi\'nski},
     title = {Normality and {Martin's} axiom},
     journal = {Fundamenta Mathematicae},
     pages = {123--131},
     publisher = {mathdoc},
     volume = {91},
     number = {2},
     year = {1976},
     doi = {10.4064/fm-91-2-123-131},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-91-2-123-131/}
}