@article{MR_1979__13_a6,
     author = {\ensuremath{\Gamma}. \ensuremath{\Theta}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\alpha}\acute{\ddot{\iota}}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\acute\epsilon}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} {E\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\mu}o\ensuremath{\gamma}\ensuremath{\acute\epsilon}\ensuremath{\varsigma}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {\ensuremath{\Theta}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}.} {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\alpha}} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\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 = {1-30},
     publisher = {mathdoc},
     volume = {13},
     year = {1979},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1979__13_a6/}
}