@article{10_4064_fm_44_2_186_191,
     author = {S. Mr\'owka},
     title = {Recursive families of sets},
     journal = {Fundamenta Mathematicae},
     pages = {186--191},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1957},
     doi = {10.4064/fm-44-2-186-191},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-44-2-186-191/}
}