@article{EU_1973-1974_06_a2,
     author = {\'{}A\ensuremath{\gamma}\ensuremath{\nu}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\varsigma} \ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\varphi}\ensuremath{\acute\epsilon}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {A\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} \ensuremath{\delta}΄\ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\xi}\ensuremath{\iota}\ensuremath{\nu}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     pages = {17--18},
     year = {1973-1974},
     volume = {06},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1973-1974_06_a2/}
}