@article{DEME_1990_31_a9,
     author = { },
     title = {N\ensuremath{\alpha} \ensuremath{\varphi}\ensuremath{\acute\upsilon}\ensuremath{\gamma}\ensuremath{\varepsilon}\ensuremath{\iota} o {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}} - {\ensuremath{\Delta}\ensuremath{\varepsilon}} \ensuremath{\theta}\ensuremath{\alpha} \ensuremath{\gamma}\ensuremath{\acute\iota}\ensuremath{\nu}o\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\varepsilon} \ensuremath{\varepsilon}\ensuremath{\theta}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\iota} \ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\iota}o\ensuremath{\delta}\'{o}\ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\varsigma}. {M\ensuremath{\iota}\ensuremath{\alpha}} \ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\kappa}o-\ensuremath{\delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} \ensuremath{\varepsilon}\ensuremath{\xi}\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\acute\iota}\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} \ensuremath{\sigma}\ensuremath{\chi}o\ensuremath{\lambda}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\gamma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}.},
     journal = {\ensuremath{\Delta}\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\acute\iota}o \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} E\ensuremath{\lambda}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} E\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\varsigma}},
     pages = {3--18},
     year = {1990},
     volume = {31},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/DEME_1990_31_a9/}
}