@article{MR_1975_2_a80,
     author = {\ensuremath{\Pi}. X\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}o\ensuremath{\varphi}\'{o}\ensuremath{\rho}o\ensuremath{\upsilon}},
     title = {A\ensuremath{\pi}\'{o} \ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\pi}\ensuremath{\iota}o \ensuremath{\alpha}\ensuremath{\rho}\ensuremath{\chi}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\gamma}\ensuremath{\rho}\ensuremath{\alpha}\ensuremath{\mu}\ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\nu}\ensuremath{\alpha} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {A\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\tau}o\ensuremath{\lambda}\ensuremath{\acute\eta}\ensuremath{\varsigma}}},
     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 = {7--11},
     year = {1975},
     volume = {2},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_2_a80/}
}