@article{MR_1975_2_a62,
     author = {\ensuremath{\Gamma}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\gamma}\'{o}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\varsigma} B\ensuremath{\varepsilon}\ensuremath{\nu}\ensuremath{\tau}\ensuremath{\acute\iota}\ensuremath{\kappa}o\ensuremath{\varsigma}},
     title = {H \ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\acute\upsilon} 7 \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\acute\alpha} \ensuremath{\tau}o\ensuremath{\nu} {\ensuremath{\Pi}\ensuremath{\upsilon}\ensuremath{\theta}\ensuremath{\alpha}\ensuremath{\gamma}\'{o}\ensuremath{\rho}\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 = {2},
     year = {1975},
     volume = {2},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_2_a62/}
}