@article{MR_1985_29_a12,
     author = {Ch. G. Philios},
     title = {Oscillatory behavior of systems of integrodifferential equations },
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}},
     pages = {131--141},
     year = {1985},
     volume = {29},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1985_29_a12/}
}