@article{MR_1975_2_a28,
     author = { },
     title = {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\sigma}\ensuremath{\eta} - {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\acute\epsilon}\ensuremath{\tau}\ensuremath{\varepsilon}\ensuremath{\varsigma}} - {\ensuremath{\Delta}\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\rho}\ensuremath{\varepsilon}\ensuremath{\tau}\'{o}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\tau}\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 = {19--22},
     year = {1975},
     volume = {2},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1975_2_a28/}
}