@article{MR_1992_39_a18,
     author = {\ensuremath{\Phi}\ensuremath{\iota}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\pi}\ensuremath{\pi}o\ensuremath{\upsilon} \ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\gamma}\ensuremath{\iota}o\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota} {\ensuremath{\Gamma}\ensuremath{\nu}\ensuremath{\acute\omega}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\ensuremath{\varsigma}} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} {T\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\iota}\'{o}\ensuremath{\varphi}o\ensuremath{\iota}\ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu}} \ensuremath{\tau}o\ensuremath{\upsilon} {\ensuremath{\Delta}\ensuremath{\eta}\ensuremath{\mu}o\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\upsilon}} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} {\ensuremath{\Gamma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\mu}\ensuremath{\varepsilon}\ensuremath{\tau}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\alpha}.} {M\ensuremath{\iota}\ensuremath{\alpha}} \ensuremath{\sigma}\ensuremath{\upsilon}\ensuremath{\gamma}\ensuremath{\kappa}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta} \ensuremath{\acute\epsilon}\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\alpha}},
     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 = {1--35},
     year = {1992},
     volume = {39},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1992_39_a18/}
}