@article{MR_1981__24_a13,
     author = {A. X\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {A\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} \ensuremath{\mu}\ensuremath{\varepsilon} \ensuremath{\tau}o {No\ensuremath{\upsilon}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} {A\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\iota}} {\ensuremath{\Upsilon}\ensuremath{\pi}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\mu}o\ensuremath{\acute\iota}} \ensuremath{\mu}\ensuremath{\varepsilon} {\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 = {24-37},
     publisher = {mathdoc},
     volume = {24},
     year = {1981},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1981__24_a13/}
}