@article{MR_2002__58_a6,
     author = {B. N\ensuremath{\tau}\ensuremath{\zeta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\chi}\ensuremath{\rho}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\varsigma} and  X. Mo\ensuremath{\upsilon}\ensuremath{\zeta}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota}  {N\ensuremath{\acute\epsilon}\ensuremath{\varepsilon}\ensuremath{\varsigma}} {T\ensuremath{\varepsilon}\ensuremath{\chi}\ensuremath{\nu}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\acute\iota}\ensuremath{\varepsilon}\ensuremath{\varsigma}} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {E\ensuremath{\xi}} \ensuremath{\alpha}\ensuremath{\pi}o\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\varsigma} {E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\mu}\'{o}\ensuremath{\rho}\ensuremath{\varphi}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta}} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} {E\ensuremath{\kappa}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu}:} {H} \ensuremath{\delta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\iota}o\ensuremath{\upsilon}\ensuremath{\rho}\ensuremath{\gamma}\ensuremath{\acute\iota}\ensuremath{\alpha} {E\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu}} {\ensuremath{\Pi}\ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\beta}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\lambda}\'{o}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu}} {E\ensuremath{\pi}\ensuremath{\iota}\ensuremath{\mu}\'{o}\ensuremath{\rho}\ensuremath{\varphi}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}} \ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\alpha} {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha}.}},
     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 = {21-34},
     publisher = {mathdoc},
     volume = {58},
     year = {2002},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_2002__58_a6/}
}