@article{MR_1974_1_a58,
     author = {\ensuremath{\Theta}\ensuremath{\acute\epsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\eta} B\ensuremath{\iota}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\rho}\ensuremath{\acute\alpha}\ensuremath{\tau}o\ensuremath{\upsilon} - \ensuremath{\Delta}\ensuremath{\rho}\'{o}\ensuremath{\sigma}o\ensuremath{\upsilon}},
     title = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\omega}\ensuremath{\varsigma} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\varsigma} {\'{}A\ensuremath{\xi}o\ensuremath{\nu}\ensuremath{\alpha}:} {M\ensuremath{\iota}\ensuremath{\alpha}} {E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\delta}o\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} {E\ensuremath{\upsilon}\ensuremath{\chi}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}} {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\sigma}\ensuremath{\acute\epsilon}\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\eta}}},
     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 = {94--99},
     year = {1974},
     volume = {1},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1974_1_a58/}
}