@article{KJM_2007_30_1_a4,
     author = {B. S. Jovanovi\'c and S. V. Lemeshevsky and P. P. Matus and P. N. Vabishchevich},
     title = {Stability of solutions of differential-operator and operator-difference equations with respect to perturbation of operators},
     journal = {Kragujevac Journal of Mathematics},
     pages = {59 - 88},
     year = {2007},
     volume = {30},
     number = {1},
     zbl = {1199.65306},
     url = {http://geodesic.mathdoc.fr/item/KJM_2007_30_1_a4/}
}