@article{MABA_2012_26_1-2_a10,
     author = {S. Kalla and N. Virchenko and I. Alexandrovich},
     title = {Inverse {Problems} {Involving} {Generalized} {Axial-Symmetric} {Helmholtz} {Equation}},
     journal = {Mathematica balkanica},
     pages = {113},
     publisher = {mathdoc},
     volume = {26},
     number = {1-2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/MABA_2012_26_1-2_a10/}
}