@article{MR_1980_17_a20,
     author = {E. Ko\ensuremath{\theta}\ensuremath{\acute\alpha}\ensuremath{\lambda}\ensuremath{\eta}},
     title = {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\alpha}\ensuremath{\acute\iota}\ensuremath{\nu}o\ensuremath{\upsilon}\ensuremath{\nu} \ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\iota}\ensuremath{\delta}\ensuremath{\iota}\ensuremath{\acute\alpha} {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\alpha}} \ensuremath{\sigma}\ensuremath{\tau}o {\ensuremath{\Gamma}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\nu}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\iota}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 = {22--32},
     year = {1980},
     volume = {17},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/MR_1980_17_a20/}
}