@article{MR_1978__10_a8,
     author = {\ensuremath{\Sigma}\ensuremath{\pi}\ensuremath{\acute\upsilon}\ensuremath{\rho}o\ensuremath{\varsigma} K\ensuremath{\alpha}\ensuremath{\lambda}o\ensuremath{\mu}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\nu}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {O\ensuremath{\iota} {H\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\kappa}\ensuremath{\tau}\ensuremath{\rho}o\ensuremath{\nu}\ensuremath{\iota}\ensuremath{\kappa}o\ensuremath{\acute\iota}} {\ensuremath{\Upsilon}\ensuremath{\pi}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\epsilon}\ensuremath{\varsigma}} \ensuremath{\sigma}\ensuremath{\alpha} \ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\sigma}o \ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} \ensuremath{\alpha}\ensuremath{\acute\upsilon}\ensuremath{\xi}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\nu}\'{o}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\tau}\ensuremath{\omega}\ensuremath{\nu} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\acute\omega}\ensuremath{\nu} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {E\ensuremath{\pi}\ensuremath{\acute\iota}\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\eta}} {\ensuremath{\Pi}\ensuremath{\rho}o\ensuremath{\beta}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\tau}\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 = {1-8},
     publisher = {mathdoc},
     volume = {10},
     year = {1978},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1978__10_a8/}
}