@article{MR_1977_7_a12,
     author = {\ensuremath{\Gamma}\ensuremath{\iota}\ensuremath{\acute\alpha}\ensuremath{\nu}\ensuremath{\nu}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Theta}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\alpha}\acute{\ddot{\iota}}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {M\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\eta} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\sigma}\ensuremath{\acute\epsilon}\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\epsilon}\ensuremath{\varsigma} \ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\zeta}\ensuremath{\varepsilon}\ensuremath{\varsigma}.},
     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 = {69--75},
     year = {1977},
     volume = {7},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1977_7_a12/}
}