@article{EUG_1989_21_a19,
     author = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\pi}\ensuremath{\acute\eta}},
     title = {A\ensuremath{\pi}\'{o} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}} {E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\pi}\ensuremath{\acute\eta}.,,}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {1--2},
     year = {1989},
     volume = {21},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1989_21_a19/}
}