@article{MR_1974_1_a91,
     author = {\ensuremath{\Sigma}. Z\ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\beta}\'{o}\ensuremath{\varsigma}},
     title = {E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\eta} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\eta}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\alpha}},
     journal = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}},
     pages = {4--8},
     year = {1974},
     volume = {1},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1974_1_a91/}
}