@article{BUMI_2002_8_5B_1_a4,
     author = {Giannotti, Cristina},
     title = {On the range of elliptic operators discontinuous at one point},
     journal = {Bollettino della Unione matematica italiana},
     pages = {123--129},
     publisher = {mathdoc},
     volume = {Ser. 8, 5B},
     number = {1},
     year = {2002},
     zbl = {1178.47032},
     mrnumber = {81416},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2002_8_5B_1_a4/}
}