@article{EU_1973-1974_09_a1,
     author = {E. \ensuremath{\Sigma}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {H \ensuremath{\varepsilon}\ensuremath{\xi}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\gamma}\ensuremath{\acute\eta} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\kappa}\ensuremath{\upsilon}\ensuremath{\beta}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} \ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\zeta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\acute\upsilon} },
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     pages = {12--14},
     year = {1973-1974},
     volume = {09},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1973-1974_09_a1/}
}