@article{EUG_2005__63_a7,
     author = {K\ensuremath{\alpha}\ensuremath{\varphi}o\ensuremath{\acute\upsilon}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\Sigma}\'{o}\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\alpha}},
     title = {H \ensuremath{\varepsilon}\ensuremath{\xi}\ensuremath{\acute\epsilon}\ensuremath{\lambda}\ensuremath{\iota}\ensuremath{\xi}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\varepsilon}\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\pi}\ensuremath{\rho}o\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} \ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\tau}\ensuremath{\eta} \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} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {\ensuremath{\Pi}\ensuremath{\rho}\ensuremath{\omega}\ensuremath{\tau}o\ensuremath{\beta}\ensuremath{\acute\alpha}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\iota}\ensuremath{\alpha}} {E\ensuremath{\kappa}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\eta}.}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {16-30},
     publisher = {mathdoc},
     volume = {63},
     year = {2005},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_2005__63_a7/}
}