@article{MR_1977_6_a8,
     author = {\ensuremath{\Theta}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Xi}\ensuremath{\acute\epsilon}\ensuremath{\nu}o\ensuremath{\varsigma}},
     title = {\'{}E\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\varsigma} \ensuremath{\upsilon}\ensuremath{\pi}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\mu}\'{o}\ensuremath{\varsigma} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\pi} \ensuremath{\mu}\ensuremath{\varepsilon} \ensuremath{\tau}\ensuremath{\iota}\ensuremath{\varsigma} {\ensuremath{\Pi}\ensuremath{\iota}\ensuremath{\theta}\ensuremath{\alpha}\ensuremath{\nu}\'{o}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\varepsilon}\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 = {14--17},
     year = {1977},
     volume = {6},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1977_6_a8/}
}