@article{10_4064_ba62_2_6,
     author = {Abdelkader Benali and Mohammed Hichem Mortad},
     title = {Generalizations of {Kaplansky's} {Theorem} {Involving} {Unbounded} {Linear} {Operators}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {181--186},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {2014},
     doi = {10.4064/ba62-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba62-2-6/}
}