@article{10_4064_ba56_3_3,
     author = {Wojciech Kry\'nski},
     title = {Remarks on {Convexity} in {Dimension} $(2,2)$},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {207--211},
     publisher = {mathdoc},
     volume = {56},
     number = {3},
     year = {2008},
     doi = {10.4064/ba56-3-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba56-3-3/}
}