@article{MR_1975_2_a119,
     author = {X. \ensuremath{\Delta}\ensuremath{\acute\alpha}\ensuremath{\tau}\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\varsigma}},
     title = {O {\ensuremath{\Pi}\ensuremath{\upsilon}\ensuremath{\theta}\ensuremath{\alpha}\ensuremath{\gamma}\'{o}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\varsigma}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\tau}o {\ensuremath{\Theta}\ensuremath{\varepsilon}\ensuremath{\acute\omega}\ensuremath{\rho}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}} \ensuremath{\tau}o\ensuremath{\upsilon} o\ensuremath{\rho}\ensuremath{\theta}o\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\nu}\ensuremath{\acute\iota}o\ensuremath{\upsilon} \ensuremath{\tau}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\gamma}\ensuremath{\acute\omega}\ensuremath{\nu}o\ensuremath{\upsilon}},
     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 = {16--17},
     year = {1975},
     volume = {2},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_2_a119/}
}