@article{DEME_1989__30_a17,
     author = {A. \ensuremath{\Pi}\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\upsilon} and  N. O\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\nu}\'{o}\ensuremath{\mu}o\ensuremath{\upsilon}},
     title = {H \ensuremath{\chi}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\mu}o\ensuremath{\pi}o\ensuremath{\acute\iota}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\upsilon} \ensuremath{\beta}\ensuremath{\iota}\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\acute\iota}o\ensuremath{\upsilon} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\beta}\ensuremath{\iota}\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\acute\iota}o\ensuremath{\upsilon} \ensuremath{\lambda}\ensuremath{\acute\upsilon}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\nu} \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}.},
     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 = {55-94},
     publisher = {mathdoc},
     volume = {30},
     year = {1989},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/DEME_1989__30_a17/}
}