@article{MR_2003_59_a9,
     author = {\ensuremath{\Gamma}. \ensuremath{\Delta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\kappa}o\ensuremath{\varsigma} and  M. K\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\'{o}\ensuremath{\varsigma} and  A\ensuremath{\theta}. M\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\alpha}\ensuremath{\varphi}\ensuremath{\acute\epsilon}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {\ensuremath{\Pi}\ensuremath{\rho}\'{o}\ensuremath{\tau}\ensuremath{\upsilon}\ensuremath{\pi}\ensuremath{\alpha} {A\ensuremath{\xi}\ensuremath{\iota}o\ensuremath{\lambda}\'{o}\ensuremath{\gamma}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma}} {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}} {Mo\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\delta}\ensuremath{\omega}\ensuremath{\nu}}},
     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 = {77--94},
     year = {2003},
     volume = {59},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_2003_59_a9/}
}