@article{10_4064_fm_108_2_129_136,
     author = {Teodor Przymusi\'nski},
     title = {Products of perfectly normal spaces},
     journal = {Fundamenta Mathematicae},
     pages = {129--136},
     publisher = {mathdoc},
     volume = {108},
     number = {2},
     year = {1980},
     doi = {10.4064/fm-108-2-129-136},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-108-2-129-136/}
}