@article{10_4064_ba8029_5_2016,
     author = {Micha{\l} Korch and Tomasz Weiss},
     title = {On the {Class} of {Perfectly} {Null} {Sets} and {Its} {Transitive} {Version}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {1--20},
     publisher = {mathdoc},
     volume = {64},
     number = {1},
     year = {2016},
     doi = {10.4064/ba8029-5-2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba8029-5-2016/}
}