@article{CLTM_1987_1987_1_a8,
     author = {Kulev, G. K. and Bainov, D. D.},
     title = {Estabilidad global de conjuntos para sistemas con impulsos.},
     journal = {Collectanea mathematica},
     pages = {99-115},
     year = {1987},
     volume = {38},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1987_1987_1_a8/}
}