@article{MR_1978_11_a21,
     author = {\ensuremath{\Sigma}. Ko\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\beta}\ensuremath{\acute\alpha}\ensuremath{\varsigma}},
     title = {\ensuremath{\Lambda}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\acute\epsilon}\ensuremath{\nu}\ensuremath{\varepsilon}\ensuremath{\varsigma} {A\ensuremath{\sigma}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\iota}\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 = {34--36},
     year = {1978},
     volume = {11},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1978_11_a21/}
}