@article{10_4064_ba61_1_1,
     author = {Zofia Ambro\.zy},
     title = {A {Note} on a {Theorem} of {Lion}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {1--7},
     publisher = {mathdoc},
     volume = {61},
     number = {1},
     year = {2013},
     doi = {10.4064/ba61-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba61-1-1/}
}