@article{COMIM_1999__7_1_a0, author = {Bajnov, Drumi D. and Stamova, Ivanka M.}, title = {Global stability of sets for impulsive differential-difference equations by {Lyapunov's} direct method}, journal = {Communications in Mathematics}, pages = {7--22}, publisher = {mathdoc}, volume = {07}, number = {1}, year = {1999}, mrnumber = {1724085}, zbl = {1035.34055}, language = {en}, url = {http://geodesic.mathdoc.fr/item/COMIM_1999__7_1_a0/} }