@article{MR_1999_51_a9,
     author = {M. K\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\sigma}\ensuremath{\omega}\ensuremath{\tau}\ensuremath{\acute\alpha}\ensuremath{\kappa}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota} {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {E\ensuremath{\pi}o\ensuremath{\chi}\ensuremath{\acute\eta}\ensuremath{\varsigma}} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\eta} \ensuremath{\pi}\ensuremath{\rho}\'{o}\ensuremath{\sigma}\ensuremath{\varphi}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\eta} {E\ensuremath{\kappa}\ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}} {M\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\rho}\ensuremath{\acute\upsilon}\ensuremath{\theta}\ensuremath{\mu}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\eta}.}},
     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 = {55--85},
     year = {1999},
     volume = {51},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1999_51_a9/}
}