@article{10_4064_fm_124_2_131_134,
     author = {Bohdan Aniszczyk and Ryszard Frankiewicz},
     title = {On minimal generators of \ensuremath{\sigma}-fields},
     journal = {Fundamenta Mathematicae},
     pages = {131--134},
     publisher = {mathdoc},
     volume = {124},
     number = {2},
     year = {1984},
     doi = {10.4064/fm-124-2-131-134},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-124-2-131-134/}
}