@article{AA_1996_8_2_a10,
     author = {J. Sylvester},
     title = {Inverse boundary value problems.},
     journal = {Algebra i analiz},
     pages = {195--204},
     year = {1996},
     volume = {8},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_1996_8_2_a10/}
}