@article{MR_1974_1_a162,
     author = {K. \ensuremath{\Gamma}\ensuremath{\alpha}\ensuremath{\beta}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\zeta}\ensuremath{\acute\eta}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\xi}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\rho}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\acute\omega}\ensuremath{\nu}},
     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 = {12--15},
     year = {1974},
     volume = {1},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1974_1_a162/}
}