@article{SMJ2_1995_21_2_a1,
     author = {Stamov, G.},
     title = {Integral {Manifolds} and {Perturbations} of the {Nonlinear} {Part} of {Systems} of {Autonomous} {Differential} {Equations} with {Impulses} at {Fixed} {Moments}},
     journal = {Serdica Mathematical Journal},
     pages = {109--122},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_1995_21_2_a1/}
}