@article{EU_1975-1976_5_a11,
     author = {A\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\acute\alpha} \ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\tau}o\ensuremath{\upsilon}},
     title = {\ensuremath{\Pi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\rho}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\pi}\ensuremath{\acute\alpha}\ensuremath{\nu}\ensuremath{\omega} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} \ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\theta}o\ensuremath{\delta}o \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\varepsilon}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\gamma}\ensuremath{\acute\eta}\ensuremath{\varsigma}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     pages = {21--24},
     year = {1975-1976},
     volume = {5},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1975-1976_5_a11/}
}