@article{KJM_2013_37_2_a7,
     author = {Rabha W. Ibrahim},
     title = {Ulam {Stability} of {Boundary} {Value} {Problem}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {287 },
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2013_37_2_a7/}
}