@article{EUA_1976-1977_04_a19,
     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 = {\ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\acute\iota} {--A\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma}}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} A},
     pages = {58--61},
     year = {1976-1977},
     volume = {04},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUA_1976-1977_04_a19/}
}