@article{EUG_1991_28_a15,
     author = {To\ensuremath{\upsilon}\ensuremath{\mu}\ensuremath{\acute\alpha}\ensuremath{\sigma}\ensuremath{\eta}\ensuremath{\varsigma} M\ensuremath{\pi}\ensuremath{\acute\alpha}\ensuremath{\mu}\ensuremath{\pi}\ensuremath{\eta}\ensuremath{\varsigma}},
     title = {M\ensuremath{\iota}\ensuremath{\alpha} \ensuremath{\pi}\ensuremath{\iota}o \ensuremath{\varepsilon}\ensuremath{\upsilon}\ensuremath{\chi}\ensuremath{\acute\alpha}\ensuremath{\rho}\ensuremath{\iota}\ensuremath{\sigma}\ensuremath{\tau}\ensuremath{\eta} \ensuremath{\pi}\ensuremath{\alpha}\ensuremath{\rho}o\ensuremath{\upsilon}\ensuremath{\sigma}\ensuremath{\acute\iota}\ensuremath{\alpha}\ensuremath{\sigma}\ensuremath{\eta}  \ensuremath{\mu}\ensuremath{\iota}\ensuremath{\acute\alpha}\ensuremath{\varsigma} \ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\theta}\ensuremath{\eta}\ensuremath{\mu}\ensuremath{\alpha}\ensuremath{\tau}\ensuremath{\iota}\ensuremath{\kappa}\ensuremath{\acute\eta}\ensuremath{\varsigma} \ensuremath{\acute\epsilon}\ensuremath{\nu}\ensuremath{\nu}o\ensuremath{\iota}\ensuremath{\alpha}\ensuremath{\varsigma}.},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {58--73},
     year = {1991},
     volume = {28},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1991_28_a15/}
}