@article{EUA_1989-1990_3_a11,
     author = {\ensuremath{\Lambda}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\nu}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\alpha}\ensuremath{\varsigma} M\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\sigma}o\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\acute\eta}\ensuremath{\varsigma}},
     title = {\ensuremath{\Sigma}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\acute\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\alpha} \ensuremath{\varepsilon}\ensuremath{\xi}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\acute\omega}\ensuremath{\sigma}\ensuremath{\varepsilon}\ensuremath{\omega}\ensuremath{\nu}.},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} A},
     pages = {37--43},
     year = {1989-1990},
     volume = {3},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUA_1989-1990_3_a11/}
}