@article{EUG_1991_30-31_a1,
     author = {M\ensuremath{\iota}\ensuremath{\chi}\ensuremath{\acute\alpha}\ensuremath{\iota} Ao\ensuremath{\upsilon}\ensuremath{\rho}\ensuremath{\acute\iota}\ensuremath{\kappa}\ensuremath{\alpha}},
     title = {H {A\ensuremath{\nu}\ensuremath{\alpha}\ensuremath{\lambda}\ensuremath{\upsilon}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}} {B\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\mu}o\ensuremath{\lambda}o\ensuremath{\gamma}\ensuremath{\acute\iota}\ensuremath{\alpha}} \ensuremath{\tau}o\ensuremath{\upsilon} {M\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\tau}\ensuremath{\acute\eta}} \ensuremath{\kappa}\ensuremath{\alpha}\ensuremath{\iota} \ensuremath{\eta} {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\beta}o\ensuremath{\lambda}\ensuremath{\acute\eta}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta}\ensuremath{\nu} {B\ensuremath{\varepsilon}\ensuremath{\lambda}\ensuremath{\tau}\ensuremath{\acute\iota}\ensuremath{\omega}\ensuremath{\sigma}\ensuremath{\eta}} \ensuremath{\tau}\ensuremath{\eta}\ensuremath{\varsigma} {A\ensuremath{\pi}\'{o}\ensuremath{\delta}o\ensuremath{\sigma}\ensuremath{\acute\eta}\ensuremath{\varsigma}} \ensuremath{\tau}o\ensuremath{\upsilon} \ensuremath{\sigma}\ensuremath{\tau}o {\ensuremath{\Sigma}\ensuremath{\chi}o\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}o.}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {14--18},
     year = {1991},
     volume = {30-31},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1991_30-31_a1/}
}