@article{EUA_1989-1990_3_a117,
     author = {X. Ko\ensuremath{\acute\iota}\ensuremath{\lambda}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {A\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha} {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha}} - {H\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\iota}} {\ensuremath{\Upsilon}\ensuremath{\pi}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\epsilon}\ensuremath{\varsigma}-}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} A},
     pages = {68--71},
     year = {1989-1990},
     volume = {3},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUA_1989-1990_3_a117/}
}