@article{MR_1977_7_a7,
     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 = {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha} {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {\'{}A\ensuremath{\lambda}\ensuremath{\gamma}\ensuremath{\varepsilon}\ensuremath{\beta}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\varsigma}} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {A΄} {\ensuremath{\Lambda}\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\varepsilon}\ensuremath{\acute\iota}o\ensuremath{\upsilon}.}},
     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--11},
     year = {1977},
     volume = {7},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1977_7_a7/}
}