@article{MR_1978_11_a7,
     author = {E\ensuremath{\upsilon}\ensuremath{\acute\alpha}\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\varepsilon}\ensuremath{\lambda}o\ensuremath{\varsigma} \ensuremath{\Pi}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\acute\omega}\ensuremath{\tau}o\ensuremath{\upsilon}},
     title = {\'{}E\ensuremath{\nu}\ensuremath{\alpha} \ensuremath{\sigma}\ensuremath{\chi}\ensuremath{\acute\epsilon}\ensuremath{\delta}\ensuremath{\iota}o \ensuremath{\gamma}\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\tau}\ensuremath{\eta} \ensuremath{\delta}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\acute\iota}\ensuremath{\alpha} \ensuremath{\tau}o\ensuremath{\upsilon} o\ensuremath{\rho}\ensuremath{\acute\iota}o\ensuremath{\upsilon} \ensuremath{\sigma}\ensuremath{\upsilon}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\mu}\ensuremath{\varepsilon} \ensuremath{\tau}o\ensuremath{\nu} \ensuremath{\varepsilon}-\ensuremath{\delta} o\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\mu}\'{o}.},
     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 = {18--22},
     year = {1978},
     volume = {11},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1978_11_a7/}
}