@article{10_4064_fm205_2_2,
     author = {M\'arton Elekes and Andr\'as M\'ath\'e},
     title = {Can we assign the {Borel} hulls in a monotone way?},
     journal = {Fundamenta Mathematicae},
     pages = {105--115},
     publisher = {mathdoc},
     volume = {205},
     number = {2},
     year = {2009},
     doi = {10.4064/fm205-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm205-2-2/}
}