@article{EUG_1991__29_a12,
     author = {Ch. G. Philios},
     title = {Oscillatory behavior of systems of integrodifferential equations },
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {131-141},
     publisher = {mathdoc},
     volume = {29},
     year = {1991},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1991__29_a12/}
}