@article{EU_1973-1974_01_a10,
     author = {K. K\ensuremath{\upsilon}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\acute\eta}},
     title = {O\ensuremath{\iota} \ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\alpha}\ensuremath{\nu}\'{o}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\varsigma} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} \ensuremath{\zeta}\ensuremath{\omega}\ensuremath{\acute\eta} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\varsigma}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     pages = {4--6},
     year = {1973-1974},
     volume = {01},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EU_1973-1974_01_a10/}
}