@article{EUG_1990_27_a2,
     author = {George Karabatzos and  Ioannis Stratis},
     title = {Solution-bounds for a class of difference equations},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {31--37},
     year = {1990},
     volume = {27},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1990_27_a2/}
}