@article{EUG_1990_27_a21,
     author = {B\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\lambda}\ensuremath{\eta}\ensuremath{\varsigma} K. \ensuremath{\Xi}\ensuremath{\alpha}\ensuremath{\nu}\ensuremath{\theta}\'{o}\ensuremath{\pi}o\ensuremath{\upsilon}\ensuremath{\lambda}o\ensuremath{\varsigma}},
     title = {T\ensuremath{\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}\ensuremath{\eta} {\ensuremath{\Phi}\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}}},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {95--112},
     year = {1990},
     volume = {27},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1990_27_a21/}
}