@article{10_4064_fm_43_2_156_165,
     author = {H. Rasiowa},
     title = {On the \ensuremath{\varepsilon}-theorems},
     journal = {Fundamenta Mathematicae},
     pages = {156--165},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {1956},
     doi = {10.4064/fm-43-2-156-165},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-43-2-156-165/}
}