@article{DEME_1999_42_a20,
     author = {\ensuremath{\Sigma}\ensuremath{\omega}\ensuremath{\tau}\ensuremath{\acute\eta}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\varsigma} N\ensuremath{\tau}o\ensuremath{\acute\upsilon}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\varsigma} and  \ensuremath{\Pi}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} T\ensuremath{\sigma}\ensuremath{\alpha}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\kappa}o\ensuremath{\varsigma}},
     title = {\ensuremath{\Theta}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\rho}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha} {\ensuremath{\Sigma}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\varepsilon}\ensuremath{\rho}o\ensuremath{\acute\upsilon}} {\ensuremath{\Sigma}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\acute\iota}o\ensuremath{\upsilon}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\varphi}o\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\epsilon}\ensuremath{\varsigma}} {E\ensuremath{\xi}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\acute\omega}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma}.} {(A\ensuremath{\pi}\'{o}} \ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha}....\ensuremath{\mu}o\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\acute\epsilon}\ensuremath{\rho}\ensuremath{\nu}\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 = {33--93},
     year = {1999},
     volume = {42},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/DEME_1999_42_a20/}
}