@article{MR_1988_34_a20,
     author = {M. \ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\rho}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\kappa}\'{o}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {To \ensuremath{\chi}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\'{o} \ensuremath{\pi}o\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\acute\omega}\ensuremath{\nu}\ensuremath{\upsilon}\ensuremath{\mu}o \ensuremath{\alpha}\ensuremath{\pi}\ensuremath{\lambda}o\ensuremath{\acute\upsilon} \ensuremath{\gamma}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\varphi}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}o\ensuremath{\varsigma}},
     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 = {56--71},
     year = {1988},
     volume = {34},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1988_34_a20/}
}