@article{10_4064_fm219_3_1,
     author = {Marek C\'uth},
     title = {Separable reduction theorems by the method of
 elementary submodels},
     journal = {Fundamenta Mathematicae},
     pages = {191--222},
     publisher = {mathdoc},
     volume = {219},
     number = {3},
     year = {2012},
     doi = {10.4064/fm219-3-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm219-3-1/}
}