@article{10_4064_fm_43_1_69_76,
     author = {J. S{\l}omi\'nski},
     title = {On the extending of models {(III)}},
     journal = {Fundamenta Mathematicae},
     pages = {69--76},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1956},
     doi = {10.4064/fm-43-1-69-76},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-43-1-69-76/}
}